You need slappin dahn! 

Something one (usually a camp drip of a wimp) says when they've had enough of being fucked around with. Usually followed by racially motivated attack on a minor, perpatrated by said camp drip of a wimp. Alternate forms include "You need slapping down." and "You, my dear boy, are in need of a good spanking in the downward direction."

In the garage, Jordan calls Ben Mitchell a sap (he meant to say puff but Eastenders is supposedly "family viewing". Hah!)

Ben was pissed off, so much so that he could've even said Bubbly's in the fridge . But instead, Ben picked up the wrench menacingly and wailed "You need slappin dahn!" before opening the proverbial can of whoop ass on Jordan.

You need slappin dahn! by Mons†er August 26, 2011