tinkoff 

The name of a looser who thinks he made up challenge but really didnt.

the name of people who bow down to asians

who would ever want to be a tinkoff

tinkoff by coolest.asian.ever November 15, 2004

thinkoff 

The ability to have an orgasm without any physical stimulation. Anyone can do it, male or female. Some can do it by deep-breathing. Most use their imagination. There's no cum but it feels just like an orgasm.

I just had a thinkoff, and it was amazing!

thinkoff by blackbird101 July 20, 2010