sexcrastinate 

to procrastinate from doing work by choosing to have sex.

Charlie should have been working on his history paper, but decided to sexcrastinate with Nick instead.

sexcrastinate by truenakamichi February 28, 2011

Semicrastinate

To semicrastinate is to be habitually on time.

If a concrastinator is habitually early and a procrastinator habitually late, who arrives on time? A semicrastinator.

"Several important meetings tomorrow require semicrastinate attendance."

Semicrastinate by Steven A. Hammock November 11, 2005

Smocrastinate 

smo-KRAS-tin-ATE: v; to delay entry through a doorway for the purpose of getting one last puff on a cigarette. The resulting puff is somewhat longer than usual and typically results in a
fiendfinder.

Must people smocrastinate when it's below zero outside? I thought we'd never get in. Jeez, I'm a smoker and I hate those people.

Smocrastinate by Nathan G. Baldwin July 14, 2008

Stucrastinate 

the dreadful combination of attempting to study and mostly procrastinating

" I stucrastinated through my midterms"

Stucrastinate by chubbybeavers March 7, 2013