poor etiquette, dealer's an idiot or that guy's an idiot?

[orange parrott]

Saturday afternoon, Tampa Hard Rock....

$1-$2 no limit
about 4 hours into the session, table's been straddling about 60%-70% of all hands, 4 callers to me in the big blind. i raise to $24 with QcQh, UTG and Button call.

flop comes QdKhTd, i lead for $80, UTG pushes for about $140 total, Button pushes for about $240 total.

UTG is down around $500 since i've been at the table, Button has only been at the table around an hour, hasn't done anything crazy.

i ask the dealer if i can show my hand without it being dead, he says i can but it's in poor taste. i show anyway, Button (maybe he thinks i've already called?) says, "f*ck, i only got two pair" and i call. dealer proceeds to lecture me on my "poor etiquette" while dealing out the next hand, and i just kinda let it go. just wanted to know what you guys think about it. thanks.