Sentence:  But will he be content with merely grabbing his crotch instead? That's the key question after Kelly's headlining appearance Friday night at the Budweiser Superfest, held in the Cleveland State University Convocation Center. Kelly's performance was not rip-off bad - it was actually very good at times. But his over-reliance on <WSD>wall-humping</WSD> gimmicks left the clear impression that Kelly had sold his audience - and himself - short. 
Meaning of the word marked with <WSD> tags:  Gyrating the hips towards a wall in a sexual fashion.