Not funny but a wierd situation: At my first job, I had a manager who had this very very mild stammer. Every once in a long while he would stammer on a random word. I didn't know then and also he wasn't aware that I stammer (much worse than him). Now, in our first 1:1 meeting he incidently stammered quite noticably on a word during his introduction. It was my turn and I got stuck on a word and there was this frown expression on his face thinking I am imitating him and I was horrified and my block kept on extending. I ultimately got through and then immediately followed by saying i have stammer. He turned out to be a nice guy and we talked about it after and had a pretty good work relations while I was there but that one moment was heart sinking.