To masturbate. Often used by bronies.

A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.

MLP Ponies Having Sex, or Masturbating. Most used by MLP Fans, Bronies.

when your dick/ballsack makes a clapping noise on your thigh that only you can hear, unless you ask everyone to be quite and make a humping motion rapidily to generate the clopping noise. Note:This can only be achieve if your wearing loose boxers.

When you're running and your dick balls start bashing together, making a "clop" sound.

Acronym-(Car Load Of Pussy: CLOP -pronounced as one word) used to describe a vehicle of some sort near loaded with fair to very attractive females on the prowl. Used to save conversation time with the intention of getting everyone eyes on..