look up any word, like swag:
 
1.
An invitation to perform the subservient act of placing one's lips on the genitalia or anus of the person offerring the taunt.

This may be accompanied by the protruding middle finger, a pelvic thrust, a cock shake, a presentation of one's derriere, a full moon or most commonly a smiling sneer and crotch grab.
"You think you're so touph? will you can Kiss This" or

You thought your fantasy football team can whip mine? Now you can Kiss This!".

In both instances appropriate body language conveys the intended , other than romantic connotations of the phrase.
by Woody67 July 18, 2011