What is Rewank?
1.
When you try to 
Dude I was jerkin it, but I realized I had Calculus homework... I had to rewank when I finished.
See 
2.
When you are wanking or banging and your dick goes limp then you do somthing to make it big again.
I was wanking in the shower but it went limp from the cold so i needed to rewank once i turned the heat up.
See