What was your worst experience with muggles?

[+HunterandSamuel]

So, getting back to the smoker on the bike path that we had to walk by and breathe in the nasty smelling smoke plus it was a location we wanted to hide a cache but decided it wasn't a good place if smokers were going to hang out on the stone bench. The funny thing that happened is on the way back, he was gone but his whole pack of cigarettes were left there with his lighter, forgotten. We thought of picking them up but where do you bring them? He was a scary looking fellow and if he saw us picking them up...would have accused us of taking them. So we left them there.