Zing! Ronda Rousey says she'd never fight Floyd Mayweather, 'unless we ended up dating.'

Ronda Rousey has been known to take a shot or two at potential opponents (particularly Cris "Cyborg" Justino). But while she has ruled out ever taking on a man in the Octagon, the UFC champ couldn't resist lobbing a grenade at Floyd Mayweather.