I was in the hospital tonight (or last night) and forgot to take off my hospital bracelet on my wrists and my friend usually shows concerns over me but this time he didn't even question it.
Yeah, well perhaps he is just beginning to treat you as a guy would treat most other guys. And that ho-hum, no concern deal is part of it. Sure if you were a girl I might try to act out some concern, make a fake at a protective deal - because we know that girls like it when we pretend to care. Other guys? You were in the hospital? But like you're out right? So, what's to care about? So about the best you are going to get out of such a deal is an expression of concern on the level of:
"Well I hope they had to hold the other guy in the hospital longer."
-or-
"Did you finally have them surgically remove your head from your ass at last?"
-or-
"So, did they give you some penicillin so that burning feeling will go away?"
or
"What happened? You get your dick caught in your zipper again."
What they will never do is say "Oh my god, that's a hospital tag (by the way, in SF the jail tags look almost exactly the same until you read them, so guess what everyone is going to think of first?) are you alright? Can I get you something? You better sit down, let me get you a chair. Are you going to get better?" That's how we deal with our moms, not our brothers.
politely ask him to stop with the smartass comments.
That's pretty much the A-Ticket for Exile from Guyville. Without smart-assed comments we pretty much would not talk to each other at all. Rude, crude, often disgusting comments focusing on the most base and tasteless elements of life - that's par for the course. You don't go "Oh cut that out", you respond in kind.