Dogs are more embarrassing than children

So I like to take Oscar to the park on the weekends early so he can get some off-leash time and interact with other dogs. He goes to doggie daycare so he's had plenty of socialization. Well...today he decides to pick a fight with a husky. He's never done that before and he's played with this dog on several occassions. Normally, he rolls on his back, pees and whimpers if another dog even looks at him funny. It gets better. Then he decides to ram me full speed from behind, knock me off my feet, stand on me and then try to make out with me. *sigh*