Jew-blocking 

When someone, not nescessarily jewish, attempts to do something stereotypically jewish (trying not to pay, trying to steal money, breaking glasses etc...) and then someone intervenes making them unable to carrying their plan out.

"no i wont pay for you, you're going to have to pay ypur half"

"Dude, dont be jew-blocking me"

Jew-blocking by The orginal shermantrix October 26, 2009