Noun -- (origins: Lingo used by car salesmen 1940's to 1970's, slang) A Snarf is someone who can fit his, her, or its, mouth over a horses ass and blow the harness off.
Verb -- snarf, snarfed, snarfing, snarffled, snarffling, would have snarfed; generally means drastic reversing airflow.
Noun -- The Snarf was outdone when his datesuck-started his Harley.
Verb -- To display his prowess, he snarfed when he pressed his lips around the sizzling muffler while the Harley was running, and blew the rings off the pistons.
When a person sticks their hand down their pants and grabs ahold of their sweaty ball sack and then shakes someone's hand. Usually done to an enemy of said person.