Blue Lick 

In the Boston metropolitan region, many commuters ride the MBTA commuter rail. These trains often have a single bathroom stall, in which a bowl resides over a tank filled with a fetid blue fluid that is presumably designed to mask the stench of it's content. One may often look down and see a mixture of blue liquid with turds, toilet paper wads and used tampons floating around. Should one be unfortunate enough to have to use this facility, the user must beware. Because the bowl is positioned at least 3 feet from the surface of this toxic soup, splash back is inevitable. Toilet water is bad enough, but having your ass splashed by the blue stuff is referred to as the "Blue Lick". May also be encountered in portapotty's.

Tom: Man I gotta take a shit so bad I'm gonna go in my pants.

Fred: You might want to just go in your pants...

Tom: Fuckit I'm using the bathroom.

Fred: Good luck.

Tom waddles back with a disgusted look on his face.

Fred: What's wrong?

Tom: I got the blue lick! And there was no toilet paper! It's soaking through my underwear!

Blue Lick by Dyssolve January 5, 2013

Blue Lick 

You pour blue fun dip in your mouth and lick a girl's vagina.

"Everytime i come over, she has a bag of fun dip between her legs. She wants the blue lick"

Blue Lick by Thebestusername74 November 19, 2015

lickety blue 

crazy, insane, daft, not right in the head.

If you think that you can get away with that, you must be lickety blue!

lickety blue by quicksdraws September 28, 2008