<human>: Can you provide a brief overview of the text?

Recently I've found myself winding up at parties where I only know the person or couple that brought me.  

Here's what usually ends up happening.  My host does their duty and introduces me to one person.  For the first half hour I bounce between my new friend and my host.  Then I find myself in a weird fisheye lens world where everyone I know is mid conversation, Everyone I don't know is in mid conversation and there is no one on their own. 

So... What the hell am I supposed to do?   What's the socially acceptable behavior here?  I know I'm supposed to meet people at parties but is it really OK to walk up to two strangers mid conversation and hover?  I know it's kind of weird but I'm completely at a loss.  Maybe 15 years ago I would have shoved sparklers in my ass and lit them for attention or something but I'm in my thirties and things are pretty civil.  I usually just excuse myself from the party after I've grabbed popcorn, finished my beer, hit the bathroom and checked my email.  I'm not going to just stand there looking like loser...  I don't want to look like I'm clinging to the people that brought me...  I dunno.  You'd think I'd have learned this shit by now...
<bot>: What do you do at a party where you know very few people and you find yourself to be the odd man out of every conversation?