Okay, any normal human would've been knocked out at the first punch. Hell, I felt it, and this is a freakin' comic.
But... Junior isn't completely human. Yeah, he must've felt that, but back in the other pages, he took getting his neck snapped, a broken rib from a spike-heel kick, harpooned in the chest, decapitated (with his vertebrae still attached), hammers being driven into his tentacles, then having them sliced by Grim (although he definitely felt those!), other objects being stabbed into his head by a jealous Minnie, and a bitchslap from his mom. So, I think he could take getting rocked in the face again and a knee in the gut.
I really expect Minnie to step in, though. She looks awful worried. Grim doesn't even wanna look! But, doesn't that mean the same treatment for Minnie? Although, if Minnie gets hurt, Junior is bound to be against that. Can anyone say, "incestuous relationship?"
Though, Bleedman, you're killin' me here! These new pages are driving me crazy! In the good way, because they're awesome, and in the bad way because I HAVE TO WAIT. FFF. Oh well, I'll try to be patient. Good things come to those who wait, I guess...