In this short scene, we learn that a company outing never ends, even if you're in love with someone. We're told that this is because "your love juice keeps overflowing lick it" . In other words, the guy's got a lot on his mind right now, and he's not going to let it go. He's going to slap the guy, but he can't do it because the guy is already licking his nipples. The guy is so excited that he can barely hold his tongue. He can barely keep his mouth shut, so he slaps the guy in the mouth, but the slap doesn't make him feel any better. He wants to slap him again, but this time, the slap makes him feel better.