skilch

Verb: Intentionally stealing something that is free for the taking (i.e. condiments, etc.); to skilch

Noun: Someone who steals things that are free for the taking; a skilch or skilcher

I'm gonna skilch some more ketchup packets for later.

Don't be a skilch; put the extra straws back.

skilching skilcher skilches steal pilfer filch nab score mooch