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To pump one's cavernous tissue.
Scott was hiding in the bathroom stall, buffaloing all during math class.
by intimidat0r June 06, 2007
Connecting to a unlocked wireless network that is not your own without the knowledge of the wireless networks owner.
A: I couldn't pay for internet at my house, so I drove down to the coffee shop, parked next to their back door, and buffaloed their internet.

B: Yeah, I've been buffaloing from my next door neighbor for the past year.
by Cacardinal September 16, 2009