"Oh my Goddess! What the hell are you doing?"
"Pissing in the fuel cell. What does it look like?"
"I know what it looks like! For cryin' out loud."
"Oh don't be a sissy. It's not like you've not seen me naked before."
"You'll break the cell!"
"Stop shouting! It's a microbial fuel cell. Urine is easier to get hydrogen from than water. I'm just giving it a kick-start."
"I thought they only took water."
"Nope. Usually they're primed with commercial urine, but if you're in a bind... Come on darling, you're up next. Get your bladder over here."