Counts per minute Puns

While we were working together, I passed some gas. This conversation immediately followed:

Dad: Did you say something?

Me: No, but there is an asshole behind me talking shit.

Apparently he had never heard this joke, and he couldn't stop laughing for a good minute. It's usually pretty hard to get him to laugh. But we both love lame jokes and it really surprised me he has never heard it.

I know it's probably not a dad joke per se, but Dad/Grandfather to my child was involved so it should still count.

TLDR: farted and said "there's an asshole behind me talking shit"