To smack ones penis in the face of another. Less homosexual alternative to T-Bagging, when used towards the same gender. Generally applied towards a drunken aquaintance during a dare.
"Hey, I double-dog dare you to T-Bag Vinnie right now!"

"Aw, I would, but he passed out with his mouth closed. OH COOL I CAN SPIFF THAT MO'FUCKA. SCORE"
by IvyLeagueBiaatch May 05, 2008
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another way of saying spiffy or nifty...an expression of happiness...originated from new england
"That new skirt is SO SPIF!"

"I aced my math quiz! spif!"
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Old english word, used by Upper Classes (Private school types, Rugby Players, heirs etc.) to describe something or someone who absolutely brilliant cannot be exceeded.
"Hugos a jolly good shot!"
"Yes! That old chap is spiffing with a shotgun"
by Flossyyyy July 29, 2015
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Spiffing, or to spiff is to have sexual intercourse with your partner/person and leave either the person, or area in a mess.
Wow this room is a mess, somebody must have been spiffing!
by brokenvanity August 17, 2010
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