What is Plasterbate?
1.
To masturbate while being plastered (severely intoxicated)
"Today sucked, I am just going to chug this fine Lagavulin and go plasterbate"
See
2.
Masturbating to make a mold of your penile unit with plaster of paris.
Fundo wanted to share his penis with the world, so he plasterbated, with hopes of becoming extremely wealthy.
See