It would have been more endearing if he attempted to do any small gesture of appreciation for Hannah (for once) with his new robot arm. But no, had to demonstrate how he would best serve his narcissistic ass.
Also wondering, does he really drink alot of beer, or is it for show to craft the image that he's a regular bro/chad? It's like when they would order big meals on their travels, acting like Shane would really be capable of eating it. He once talked about how good this rice/mayo slop he concocted was and I suspect that's one of the most substantial "meals" he can fully eat.
However, if he does get drunk, I imagine he'd be even more rude, snarky, and condescending than he already naturally is.