Eggs

Egg Types

Each type of egg will normally bounce off of walls up to 3 times.
A lick will stop its flight, bobbing it downward in a predictable direction.
On the last collision with a wall, or when the egg passes through an enemy such as a bat, the egg flies off the screen.

Green Eggs

The basic kind of egg made by Yoshi, or by green egg blocks. They don't have any contents. Upon bouncing off a wall, they become yellow.

Yellow Eggs

These eggs come from a green egg bouncing off a wall, and turn red on the next bounce. They just have a coin inside. Since coins only give you extra lives, they are essentially useless for speedrunning purposes.

Red Eggs

Red eggs come from yellow eggs, and have two little stars inside. They don't change color when hitting a wall. Red eggs are a quick way to get stars compared to clouds or rings, but take more planning to be useful.

Level Specific Projectiles

Some projectiles can only be found on certain levels, and thus are only specific to speed running those levels.

Flashing Red Eggs (1-6|1-7|4-E)

These eggs have a red coin in them, and are part of the normal 20 red coins for that level. Therefore, they must be used to hit something, like a star cloud or enemy, in order to get all of the red coins on that particular level. They behave like normal eggs otherwise.

Giant Eggs (2-7|3-4)

Giant Eggs come from eating a large shy guy. They do not fly so much as plummet, turning all enemies on screen into little stars. This is used in 2-7 to overload the amount of objects the game wants to put on screen, keeping some obstacles from appearing. They can also be used to create additional stars for 100% routes.

Huffin' Puffins (4-7|5-6)

These projectiles, resembling baby ducks/chickens, fly in a circle, and try to return to Yoshi. You have to steal them from their mom by assaulting her. If they hit a wall twice, they get scared off and run away. It's possible to manipulate their flight path by dancing around them. Can be used to fly continuous circles around Yoshi, often known as doing loop-de-loops.

Egg Aiming and Egg Shots

Neutral Eggshot

When the egg controls are set to hasty, you can quickly tap and release A to do eggshots that will always have an identical angle every time. There is a 9 frame window, from pressing A to releasing it, for this to work. This is very useful because it allows certain difficult eggshots to be made consistent. By constrast, if egg controls are set to patient, there is a one frame window to do any eggshot with an identical angle. Because of this, for a category like 100% where consistent eggshots are incredibly important, it is highly recommended that you play on hasty.

Rising and Falling Neutral

Whether Yoshi is jumping or not influences egg trajectory, which can be see in neutral eggshots. Doing an egg shot then immediately jumping results in a lower angled shot (also works if you jump then almost immediately fire an egg as well, assuming you continue to hold down jump), whereas firing an eggshot while falling has the opposite effect: the egg angle will be higher.

Upwards Eggshot

There are 2 types of Upwards Eggshots.
Straight up-shot: To do a completely vertical up-shot you have to stand still and:

• A) Tap A and hold up for less than 10 frames
• B) Wait until your cursor is out before releasing A.

Angled up-shot: This happens when you make an up-shot by tapping A and holding up for longer than 10 frames, it's inevitable when running and shooting upwards. This also makes Yoshi face the opposite direction.

Egg Juggling

Tonguing Eggs

Eggs can only be tongued after a certain small of amount of time has elapsed after throwing them, i.e. you cannot throw an egg and immediately tongue it. The general direction an egg moves when tongued is dependent entirely on Yoshi's speed and direction. If Yoshi is standing still, the egg will move towards Yoshi. If Yoshi is running to the right and tongues an egg, the egg will move with Yoshi to the right. The faster Yoshi is going, the faster the eggs can go. However, the position of Yoshi when the egg is tongued changes exactly how fast the egg will move.

• If an egg is behind Yoshi when you tongue it, it will speed up to "try to catch up."
• If an egg is in front of Yoshi when you tongue it, it will slow down to let you catch up.

Therefore, to produce the fastest moving eggs, you want to tongue an egg while moving as fast as possible when the egg is behind Yoshi.

///VIDEO IS SUPPOSED TO BE HERE (???)///
First, eggs tongued when standing simply move towards Yoshi. Then, all the eggs in the room are tongued while Yoshi is still in front of them. This causes them to move forward, but slowly. Lastly, all of the eggs in the room are reset, and tongued again, this time while Yoshi has already passed them. They fly much much further. This is very relevant for achieving the Baxter Shot.

Juggling Eggs

Eggs can be tongued indefinitely, and since they follow Yoshi's movement more or less, they can be continuously juggled to follow Yoshi.
See: https://www.youtube.com/watch?v=cL_lfKkSbnM

Baxter Shot

Named after the TASer Baxter, who discovered them, the Baxter Shot (Baxter, for short), is performed when an egg is tongued over the goal ring at the end of the level. If the egg flies far enough, the next Yoshi will pick up the egg, and it will be useful in subsequent levels.
See: https://www.youtube.com/watch?v=t59AznaXVTo