When you fuck someone in the thighs with your dick. Have fun

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.

When a man inserts his penis between a woman's thighs, just under her vagina and fucks her thighs till he cums. This can be done in many different positions, like: the woman bends over the bed, face to face, or when the woman has her back to the man. This is a very nice sexual act since, a woman's thighs are really smooth.