If Kenny hadn't roped him into a game of 7 minutes in heaven, then he would have never been awkwardly huddled with Kyle on the bathroom sink, totally wasted (and admittedly horny) while everyone outside thought they were busy shoving their tongues down each other's throats. It wasn't like Stan was opposed to the idea of shoving his tongue down his best friend's throat-he just wasn't so sure Kyle felt the same.