Empty Bladder Paradox
When your bladder is empty until you are in a situation where you cannot use the restroom at which point your bladder is so full you have to urinate worse than you ever have. Also applies to getting comfortable in bed.
Didn't have to pee until I got a mile down the road and the empty bladder paradox hit me and I felt like I was gonna pee my pants.
Got hit with the empty bladder paradox as soon as I got comfortable in bed.
Got hit with the empty bladder paradox as soon as I got comfortable in bed.