Ok, LARPers is a new term and had to look that up. Ok, I guess different strokes for different folks. But I did find a funny picture that said "LARPers, Because even trekkies need someone to laugh at"
LARP is a bad, all-encompassing term, to be honest. There are some "LARPs" that Trekkies would never laugh at because the people doing them would remind them of getting physically bullied in school (SCA most notably - which some will say is not a LARP, but since you are ROLE PLAYING a character and it is LIVE and has ACTION, I can't see how it's not) and then there are others that, yes, Trekkies could laugh at easily (touch LARPs, LARPs that don't allow any touching and mitigate combat via a dice rolls - that really breaks up the live action part of it!).
Attached is an example of a full-contact LARP, which can often be much more like a highly physical contact sport than dressing up and being silly. Those guys in the middle full on ran at each other and collided in a shield bash. Epic times.