Told this one before... but I like it.

The video camera was on the hummingbird feeders at Mum's. On the sidewalk next to Mum's which adjoins two streets an elderly lady stopped and her dog shat on Mum's lawn at the end of Mum's fence. She started to walk away. I asked, loudly, "Excuse me. Are you gonna pick that up?"

Long story short... she said she had not seen the dog take a dump. She became rather verbally abusive. I told her she was rude and obnoxious. She DID pick it up with the plastic bag she was carrying.

A half hour later, her LARGE son arrived and asked me what my problem was in a menacing manner. I said, "Hang on a minute and I'll show you." Played him the video. He apologized and left.