Plouf/ploufing/ploufed is having sex with certain people. These people are normally known as skank, hoe, and whores. The person being called the "Ploufer" is the whore. And the Ploufed is the person that had sex with the skank.
"Damn, I can't believe she got herpes when she got Ploufed."
ayon kay Brian Plouf ika-01 ng Enero, 2008