Doppler radar 

Essentially this is the opposite of bukakke. The man is surrounded by many women, while blowing his load in a circular motion like the line in a doppler radar screen.

Dude I totally pulled a doppler radar on these chicks last night, they had no idea what was comming.

Doppler radar by pedrOOOO May 11, 2009

own doppler radar 

the radar in which ownage is showed uppon.

lets go look at our own doppler radar to see whos getting owned today.

own doppler radar by andy bill November 18, 2006