Sending a heart to the opposite sex... like for a girl if you have a guy best friend you'd send them a black heart and vise versa

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.

you use it when you are in love with someone and/or want to show your appreciation for them