My friend plays a military simulation game with a group of guys who are super into role playing military personnel.  I'm definitely not into this sort of thing, but I he invited me to join one night and I accepted.  Figured it might be fun.  He gave me a basic rundown of the rules including some terminology I might need to follow along.  

Well we drop into the first scenario and me and the other low rank players were lined up while one player was our commanding officer.  He immediately starts pacing his character back and forth in front of us and starts belting out orders and they are to respond to with "yes sir."  Well I was a little slow to respond to one of these so he comes up to me and starts going off on me (in character of course.)  Problem was as soon as he did that I started imagining the "show me your war face" scene with R Lee Ermey in Full Metal Jacket and I started busting out laughing.  After a second I manage to stop myself and apologize for my inappropriate outburst.

They boot me and ban me from the server.  I tried to apologize to my friend but he told me I was an asshole and embarrassed him in front of the group.  He hasn't responded to me in a few days and I feel really terrible for it.  I didn't mean to disrespect any of them.  I just thought of something very funny and something about that moment really pushed me into a laughing fit.

Was I an asshole?