Plas is a Dutch word wich means piss or pool. Also it's the only weapon against Klaas.
Dgrwe: brb i got to go to the toilet
Short for plastics; term used to describe a sterotype of females those who portay any number of the following characteristics; acting like a typical dumb-blone, talking like a cliche cheerleader, worrying about makeup, going shopping on a regular basis, spending time with other girls of such nature, priding themselves on beauty and nothing else, etc.
See the film 'Mean Girls' for a better definition of 'Plastics'
"All the plas sit together up the back of the room and just gossip through the whole lesson"
"She was acting so plas!"
"I saw all the plas shopping with that fagal today"
"She was acting so plas, i heard her say; what's infinity?"
"All the plas are so dumb"
"She started to act all plas, like it was good or something"