tam shank 

the act of loving oneself (see wanking) in order to put off a more valuable task, because the long term value of this task is clouded by the short-term desire to love oneself

On a Sunday morning Pete knows that he should go to the library, but he prefers to stay home and have a tam shank

tam shank by Bard Lucy Hume XI May 21, 2006

Tamshank 

The glorious act of receiving oral sex whilst simultaneously taking a dump.

For his birthday, Zak asked his GF for a Tamshank, he had always wanted one but never had enough courage to ask her. She agreed as long as he returned the favour.

Tamshank by Big Aund January 11, 2012