Aqua-lung 

1. a popular album by the group Jethro tull
2. a bum, vagrant, or other homeless person

1. Dude, did you pick up Aqua Lung yet? It fucking rocks!
2. Check out Aqua Lung over there...we should give him some change

Aqua-lung by James N. P. May 7, 2005

aqua lung 

To hold in a hit of marijuana for a long time.

Dudes got aqua lung over here.

aqua lung by Tiari October 8, 2006

Aqua-lung 

got this one from my ass bowgartin the ho damn blunt with my massive hit's. thus givin me the nikname aqua-lung
-being able to take such a massive hit you could smoke half a joint in one hit

-Damn aqua-lung save some for us
-yo aqua-lung no more fo yo ass till the next one's rolled up

Aqua-lung by Brian B. March 10, 2005

aqualungs 

An asian person who tries to breath under water but fails and end up drowning to death.

George tried to test out his aqualungs theory but failed and ended up DOA.

aqualungs by whatalowblow December 25, 2009