The result after eating too much cream. Especially after an extraordinarily large serving of nachos, bread and butter pudding or a cheesymite scroll.
Clive: I'm so full, I could just... Ohh-oh-ohmygod-ohhhhh yeah... Ohhhhh...
Kevin: Dude, did you just creasm?
Clive: Sure did. More nachos?
Kevin: No way man, they're covered in creasm-fluid - gross!