A common slang word used for LSD in los angeles. The word refers to an earlier version of the synthesized LSD, Flex-25. When one trips on LSD they sometimes refer to it as flexin', because when on the drug one is flexing his or hers spiritual awareness.
"Hey man, I jus picked up a grip of flexo's"
"I'm flexin' so hard the walls are starting to drip"
"Wats doins, you got any those flexo's left?"
"I'm flexin' so hard the walls are starting to drip"
"Wats doins, you got any those flexo's left?"
by itshoisfonky February 16, 2009