Toilet

He needed to pee.
He was at least ten minutes from his house and the nearest convenience he was aware of was fifteen minutes in the opposite direction.
It was broad daylight and there were too many people around and a general lack of alleyways which hindered any al fresco piss possibilities.
He quickened his pace to that of an Olympic speed walker.
Two minutes later he saw his house in the distance. He upped his speed to a light jog as he felt his spacehopper bladder strain.
He got to his front door and did that thing that someone who desperately needs to pee often does in such situations - he dropped his keys.
Fumbling around on the ground and fearing he would wet himself, he grabbed the keys. He quickly unlocked the door and entered.
Then he stood in the bathroom in front of his toilet for nearly five minutes, unable to urinate.