I'm sure I have at some point

One time this dealer came over to a house I was in with 500 pills and he placed the bag down somewhere and lost them. We were all looking frantically for them and I found them down the side of a chair and stupidly gave them back to the guy, who was a total arsehole (if he was nice I wouldnt have even considered taking them) I was kicking myself all the way home - they were good pills as well.