Like Like Launch is a method of using the vertical movement of when a Like Like spits you out to get on top of things you otherwise couldn't. It is achieved by having Link collide with something, such as a chicken, in a specific way while he's being spit out. The easiest way to do this is against a wall because it's fairly easy to get the chicken stuck between Link and the wall as you're being eaten by the Like Like.
Speedrun uses: Bow Wow Skip and Angler Key Skip