When you're pissing while sitting down on a toilet (as in, #2) and the piss stream flows between the toilet seat & the toilet all over the goddamn floor because of the way your dick's angled. If I had a bigger dick, it would just always angle towards the fucking porcelain. I hate it when this happens & then I have to clean it all up.
Then again, there's a flip side of the coin: a dick so long it touches the inside of the toilet bowl. Perhaps that's worse.
Gaaaah!!! *begins cleaning floor*