Jab-end
The little bit at the end of your wiener. Some say it comes from a dumb mistake when someone said 'jap eye' and turned it into 'jab'.
He texted me, 'You're the biggest jab-end ever.'
In the lunchroom, someone said, 'You're a jab-end and you know it.'
During gym class, my friend called me a jab-end because I couldn't do a pull-up.