There is a lot of anger behind "You Oughta Know," the hit single that put Morissette on the map, so if someone told you it was written about "Full House" funnyman Dave Coulier, then you'd likely say, "Cut. It. Out." The odd couple dated in the '90s, and then there was apparently a mess left when he went away. We're not quite sure how this relationship happened in the first place, but he plays hockey and she's Canadian, so they have way more in common than you'd think.