A pairing of two people or characters that you would never expect to be romantically compatible. Crack couples are usually meant to be funny, but sometimes they actually happen.
Dom: Matthew Bellamy and Kate Hudson... what a crack couple... it'll never las-WHUUUU????? She's pregnant!?!?!?!
...........................................................................*tear*
...........................................................................*tear*
by The One Who Sat The Fuck Down January 15, 2011