What does a~in mean?

First of all what does a-in （アーイン） mean? Second, I was wondering if a jguy (of course, a jguy you know.) holds you from behind and says ''a-in''?

It doesn't really *mean* anything... I guess it's "a iiiiin," isn't it? Then it's just a funny sound that a Japanese comedian Ken Shimura makes in one of his routines. Maybe you could find one of his performances on YouTube or some place? It's pretty silly though :)

Thanks for your reply, but I'm afriad that's not really enough information I need. ^^; Thank you though for your time.

A ー　in a Japanese word is simply a way of making a sound in a word spelled out in katakana into a ''long'' sound.

アーイン doesn't mean anything specific that I know, more likely it is a sound written out (for example, something like ''ahhhh'' in English)

Hm...mean is probably a bad use. Context or concept maybe?

Here is a video of Ken Shimura as 'Baka Tono'(Foolish Boss) saying "A-in"
http://www.youtube.com/watch?v=20GgeJ_4izo