Trying to not get caught power pissing in the in-laws basement

I was staying over at the boyfriend's parents place when I suddenly needed a wee whilst downstairs in the basement. Unfortunately there's only one bathroom So I pulled on my festival alter-ego cloak, grabbed a plastic cup and started pissing into it. Just as I started, I could hear someone walking across the kitchen floor and heading my way! So I had to push that pee out with every ounce of my strength in a bid not to get caught!