Board Thread:Off Topic/@comment-26226441-20170908034138/@comment-25936766-20170911175728

Lord Jaric wrote: isn't almost every ship a crack ship. You can pretty much count the ones that are actually possible on one hand. Not necesarily.

1-There's ships that have real, clear support in canon, in some form or another, like Arkos or Animal Abuse.

2-There's ships that have only subtext at most.

3-There's ships that involve a pairing with no real support or subtext in canon - The characters may not even know the other even exists - but it wouldn't be a bad couple per se.

4-Then there's ships that pair characters that would make a ridiculous couple due to multiple factors, something that could never happen except as a fan-made joke. Like Adam x Penny. Or Ruby x Naruto.

By TvTropes's definition, the last two are Crack Ships, but IMO "3" is unsupported, but believable, while "4" is just ridiculous, and thus a real Crack Ship.