Our 5 year olds were playing in a small kiddie pool in my friends backyard.
My friends daughter had to use the bathroom. My friend goes into her house, gets her daughter's flip-flops, the kid is practically dry by now, and takes her daughter behind the shed to do her business.
She comes back around to the patio and laughs, "Oh, we have a little spot that we do that back there." I just couldn't think of anything to say!

What?
I was pretty surprised by this. Don't know why she didn't just take the kid inside to do her business. They do have indoor plumbing! Honestly, I was glad my daughter didn't ask to go because I would have been pretty adamant about her using the real bathroom. My 5 year old even asked me, "Did she just pee in the grass?"
Yeah, there are times when nature calls only nature will do, but not when your bathroom is 20 feet away. Gimme a break.