Peppering the poop

Ruining something fun for someone else.

"That disgusting dog just ate her own crap again! That's it! I'm peppering the poop!"

Can also be used in the past tense, as in "Dude, what the fuck?! He totally just peppered the poop! I'm never playing this game again..."

Pepper the poop

To ruin something fun for someone else.

"The disgusting dog just swallowed an entire turd in one gulp. I am going to pepper the poop."

See also peppering the poop and peppered the poop.