Going to a Bachelorette party for an acquaintance

Last night I went out with girls who all probably four years younger than myself for a former co-worker's bachelorette party. I got roped into it somehow- and it started out really fun I played the happy go lucky person that I can be. I was really happy until I got insulted from a guy somewhere out of left park. I am a big girl I am not going to pretend I'm not- I don't think that I would be as funny or nice if I wasn't and on the other hand I can be a downright bitch. The situation was that I went outside to talk to my friend on my cell phone and I put my purse down on the table and there was a group of guys nearby. Before I could sit down one guy says 'Don't sit there." I said I wasn't going to and before I can say anything else he says, 'I wasn't worried about you taking someone's spot, I was worried about the chair.' A group of about 5 guys with him kind of make sounds like they can't believe he said something like that, but they didn't say anything. So that pretty much put the end to my night of fun. It just sucks- I am really nice and I can't hide my feelings at all. So did I just turn around and ignore him? Yes and no- I let him know he was an asshole, but I let the tears flow while I talked to my friend on the cell phone. I tried to not let the other people focus on that- but they saw my face after I went back in and the story spilled out. Last night was just a reminder of why I don't like to go out to bars- because people are complete assholes. I would rather be overweight and alone than skinny and in a shitty relationship with an ignorant frat boy. I really don't know why I am putting this in here- but I am so be it.