Breaststroke
There was a Blonde, a Brunette, and a Red Head and they had a competition to swim breaststroke across the English Channel. So off they went.
15 hours later the Brunette and the Red Head got out of the water. 5 hours later the Blonde got out of the water. ‘I want to protest. I want a judge,’ she screamed
‘What for,’ they asked.
‘You two used your arms.’