I messaged a guy on Plenty Of Fish; he didn't have a clear photo, but hey, whatever. Chatted a bit, he seemed interesting enough, did a fair bit of travelling, lived on a boat (cool in my books). Met with him for coffee and that didn't go so hot.

First thing I noticed is that he was shorter than me. Yes, it's shallow, but at 5'3" it's rare for me to find a guy shorter than me, and it's not really something I'm attracted to. After talking with him for 30 seconds I also realized he was stoned out of his mind. He couldn't carry a conversation, and just kept saying how he "needs to meet his friends at a party soon, dude." Needless to say I let him go to party with his friends!