Danish Handshake 

A sexual, and extremely disturbing sexual act, in which you fist a girl in her vagina so hard, that her intestines play peekaboo throughout her asshole.

See fisting.

"I gave that bitch a danish handshake before she dumped me. LOLz0rzroflmaomg!11!"

Danish Handshake by Mitch Teh 1337 May 6, 2009

Danish handshake 

The pursuit of mutual mirth enjoyed by a party of two hetrosexual males, one of whom vigorously stimulates the other participant's reproductive organ.

Climax is defined by a shared hilarity as opposed to the usual shameful orgasmic finale.

"Yeah, the pitch went fine, after some initial friction, I sealed the deal with a Danish handshake, Lol."

Danish handshake by swedishNigel April 14, 2010