The act of rubbing ranch dressing on the mustache of a past out, unsuspecting person causing it to dry and crust on their upper lip.

v. collectively or individually finding someone/something to blame for a problem, as opposed to brainstorming which connotes finding solutions to a problem

n. the act of finding someone/something to blame for a problem

(from a TV ad for HD television)

When you perform a sexual act with Ranch dipping sauce (Hidden Valley or ranch with peppercorns) as lube.