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1. Someone who has a really small penis that couldn't even pleasure a mouse.

2. A plumbing company. "If it ain't working, call Guirkin!"

3. Someone who can't handle a drink and is often the first to pass out, this can end in them having pranks pulled on them.
1. Wow Michael's a right Guirkin!

2. Look's like your sink is blocked, you should call Guirkin.

3. Hah, he's such a Guirkin, let's abuse him while he's unconcious.
by nool evidle July 25, 2010
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