One guy asked me about my upbringing and when I proceeded to tell him he started looking around the bar as if he wasn't listening so I asked what was wrong a couple of times before he acted surprised and said "oh, were you talking? Sorry, I'm deaf in one ear so couldn't hear you." 
then he started laughing and said not really. He also started shouting random names at people walking past, was singing Duran Duran songs loudly out of nowhere and to make matters worse had conveniently 'forgotten his wallet' so I had to pay for the drinks. He was hinting at food at one stage as well! Told him where to go, I should've done the minute he said he'd forgotten his wallet tbh but I was 20 and stupid.
I've had a fair bit of experience with tinder over the past few months which has been, shall we say, interesting...
One guy was professing his undying love for me on the first date and talking about adopting my children in the future, getting married and having one more child with me in a few years time after we'd both done what we wanted to do career wise 
. I explained I didn't think we were compatible and that was all a bit too fast for me and went home. He basically hounded me with paragraph texts about how devastated he was, he could sense we were good for each other, we would have a great love story and all the rest. So I blocked his number. He found me on both Facebook AND Instagram and sent me messages on both those avenues too, again paragraphs going into details about how incredible we'd be together.
Another guy I got talking to seemed really decent. He had a child, was a vegan, shared a lot of other beliefs with me etc and lived locally. I thought oh brilliant, what a catch... Until he told me he'd only split up from his wife two weeks prior and was still very much in love with her and hoping they'd rekindle. WHY ARE YOU ON TINDER THEN!!!
That happened twice actually.
Set up a date with another man only for him to tell me he'd split with his girlfriend three weeks ago and was utterly bereft. Needless to say I did not go on said date.
Strangely the man I lost my virginity to has cropped back up in recent weeks on Facebook. Bearing in mind this was over a decade ago and he utterly broke my heart at the time. He's been HOUNDING me with messages... If I didn't reply I'd get five messages asking how I was, why I was ignoring him, when would I reply and then getting a bit angry like "do you think your time is more important than mine?" Whaaaaat... He's in his thirties ffs.
Oh god I did get 'catfished' once when I was 18. MySpace days, met him on there. Pictures were all obviously a few years old. Turned up and he was about ten stone heavier, massive teeth which he'd managed to hide in his pics and his hair was down to his arse and greasy! I turned around and got the train home.