This happened to me ay Christies in Phoenix. I was on a business trip and had a free evening before meeting clients the next day. Went in and after about 30 minutes I saw the ass of a super cute brunette spinner while she was bent over talking to a guy in a chair in front of me. Her ass, legs, back all looked really good and I was just waiting for the guy to pass and see her turn around so I could make eye contact and lock her down...
She turned and our eyes locked, hers in curiosity, mine in panic! She was a near twin for my cousin who lived about 20 miles north of the PHX area, near Glendale... but my brain finally got some blood flowing and I realized I must be wrong; my cousin was only 4 years younger than me (I was about 43) and this girl was maybe 19-20... whew! I started to relax and then remembered my cousin has a daughter who just started college!!
I tried to regain some composure - badly. By then she had mistaken my look of total fear as intertest from an uber-shy guy, so she sat down on my lap and started chatting... I finally got my head together (pun intended) and started chatting her back. After some small talk and a few gentle probing questions scattered into the mix I figured out she was indeed in college but was born back east. Whew!!!
Still, the damage was done and I just could not close the deal and eventually let her slip away to other PL's.
Several years later, I was in town for a family function and met the daughter. Chubby, EMO-ish type... go figure.