A rainbow connection is a regular source of chemical drugs, which are typically harder to come by than other substances like weed or booze (if you're under legal drinking age). Code for a dealer who usually sells MDMA, acid, etc. Sometimes includes meth, crack/cocaine, or other greasy shit.
a word of expression to when you give up on comprehending someone's words of ignorance, stupidity, absurdity or are too exhausted to formulate a proper response.
Commonly seen in TikTok comment sections in replies to lazy attempts at humor, overconfidentally incorrect statement, or an over-the-top comment or when someone completely misses the mark on something.