We were just out enjoying a local indoor/outdoor flea market and farmer's market when I felt like I had to pee. Not wanting to use the bathrooms there (I'm a picky pee-er), I decided to hold it.
Now I'm at home. We had to leave early because I coughed and peed myself in the middle of the flippin' farmer's market. We're just standing there looking at pies, and I pee myself in front of the Amish.
So unless you also want to pee yourself in front of the Amish, a flea market, and God himself, just use the bathroom when you need to.