Peter says: Gross things dads do

As far as I’m concerned, I'm a pretty successful parent. I recently finished teaching Addy to laugh after she farts. 

Not surprisingly, this annoys Lisa (read: it pisses her off). ("It's like I have two daughters and a son," Lisa nags.) After Addy toots the two of us are in stitches. Even Peyton laughs sometimes, even though she doesn't know why we're laughing ...yet.

Why did I teach her this? Because she’s only three years old. What harm can it do? It's funny and cute.

Why isn't Lisa impressed? Her sense of humour isn't as colourful as mine. She also keeps harping about what's going to happen when Addy goes to school and does it. Admittedly, I don't see a problem with it, since me and my buddies still laugh when someone lets one rip.
 
Has your spouse taught your kids any bad/questionable/rude/funny habits that you can't stand? Is your spouse irritated with something you taught the kids? (Share stories ...I need good ideas for what to teach Addy next!)