My dogs arms are way too ripped from his XVest

I got him amped up and chasing me around the house, and he got so excited that he latched onto my leg and tried humping my leg!! I couldn’t get him off! His biceps are too ripped!!!!

So I had to drag him, humping my leg into another room and shut him in there. My mistake for getting him so riled up, but I have to admit I was laughing hard.