2 definitions by Jeff Shewer

Given on someone's birthday, this involves tying down the recipient and attacking them with tentacles shaped like giant penises, followed by urinating on them. While this may sound unpleasant to the average person, there are at least 20 different hentai mangas devoted to this very subject.
Geoff: Happy 22nd, Jamie! Now it's time for your Japanese Birthday Surprise!

Jamie: Japa-what? What the hell are you... oh my god AGGHHHHHHHHH

(screams of agony are heard)
by Jeff Shewer May 18, 2009
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The act of substituting a thin slice of deli meat for a condom.
"Fuck Trojans, I hamdog that shit."

"Sally forgot to take her birth control, so we just hamdogged all night long."

"I hamdogged Julia two weeks ago, and now I'm afraid she's carrying my meat spawn."

by Jeff Shewer February 7, 2008
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