Erection When Getting Lap Dance?

I just got into a discussion beside a friend and she tried to say that it is inevitable that a guy get an erection when getting a nouns dance. I, on the other hand, argued that it depended on the man, the girl, and the posture of the dance (contact/no contact, clothes/lack of). Can I get some... masculine opinions?
Well ...

if its not girl's clothes off, next to contact . i wouldn't think its a 'lap dance', that's what lap waltz means.

So while its possible some guys won't, its fair to assume that surrounded by the majority of cases, guys will get erections.
I don't find lap dance to be the least bit erotic. For one thing, it's a turnoff to be doing this stuff surrounded by public, the dancers have been next to many others, and nothing's gonna happen for me unless ALL clothes are stale! It's a total waste of time and money, as far as I'm concerned. Well ...

if its not girl's clothes off, next to contact . i wouldn't think its a 'lap dance', that's what lap waltz means.

So while its possible some guys won't, its fair to assume that surrounded by the majority of cases, guys will get erections.
Answers:    Everybody is different, as is each experience. You might grasp an erection one time and not the next. Your mood, the girl, the environment all come into play.

No rules for erections. They any happen or don't.
if the girl looks good and hot you will achieve an erection i get one just looking at my wife