Definitions by Matt - Drunk fox of the day

Sink the kayak 

A euphemism, to "sink the kayak" is to ejaculate during intercourse.

*after ejaculation*
"Yeahh i sank the kayak"

Guy 1 : what you up to tonight?

Guy 2 : I'm going to sink the kayak

Sink the kayak by Matt - Drunk fox of the day February 26, 2009