blue crack 

Slang for Tylenol PM - and the similar generic store-brand variations of the same - when used as a recreational drug.

Contains diphenhydramine and acetaminophen - the latter should be avoided. It's *really* bad for you when used in excessive amounts.

I doesn't contain dextromethorphan, so it's not technically a robotrip, but roughly similar.

Nonetheless, you can get high off this stuff. Tastes kinda frosty-minty and strong.

It's blue - it's liquid - and you can buy it in almost any drugstore.

A cheap and legal high - Blue Crack.

It's HELLA dangerous, though, because of the acetaminophen. Try something else!!!

blue crack by kire November 8, 2007

blue crack 

a strain of marijuana, cross between Blue Dream and Green Crack

"I smoked Blue Crack out of this 6 foot bong the other day and i was baaaaaked"

"Yo dawg pack sumo o' dat Blue Crack shiit"

blue crack by Alienjiz1990 November 28, 2009

blue crack 

1) Someone who acts like someone cool in public but when with friends is completely different.
2)In use to why a person may act strange or random.

1)Girl 1: Yeah, he's actually quite nice when he's not surrounded by people.
Girl 2: Ah, so he's blue crack.

2)Girl 1: AH! Look, there's a singing goat!
Girl 2:........
Girl 1: That crazy goat.
Girl 2: You're so on blue crack.

blue crack by angus the superduck March 5, 2005

smoking the blue crack

Acting like a complete idiot. Presumably "the blue crack" is Drain-O Crystals. "Have you been smoking the blue crack?" is thus analogous to "Have you been drinking turpentine?"

Note that this usage pre-dates the use of "blue crack" as slang for Tylenol PM.

"A customer asked me today if I could see her computer screen through the phone. I asked her if she was smoking the blue crack."

smoking the blue crack by luvcraft2 May 22, 2009