Crobby

Sam: Did you kiss him? Dean: Sam! Sam: Just wondering. Bobby: No! [Crowley clears his throat and shows them his phone, which has a picture of him and Bobby kissing on it.] Bobby: Why'd you have to take a picture? Crowley: Why did you have to use tongue? – Sam Winchester, Dean Winchester, Bobby Singer, and Crowley, 5.21 Two Minutes to Midnight

Crobby is a portmanteau shipping name that refers to the slash pairing of characters Bobby Singer and Crowley. Also known as Crowley/Bobby.