An unusual devise used to claim the foreskin of uncircumcised mens. resembles a lightsaber and runs off of the foreskin of unconseting men. used so if the rabbi sneezes during the castration the child will not loose his shlong
Idiot 1: Guys!! a Jewish Space Laser!
Idiot 2: They just castrated all the men in the northern hemisphere!!!!
idiot 3: glad i'm circumcised!
all idiots: guffaw
A "Jewish Space Laser" is when you receive oral sex next to a window and try to hold a magnifying glass steady enough for the beam of sunlight from the window to light all 8 candles on the menorah.
The Lower Fenwick Line of space is a complex algorithm that takes into effect the quantum entanglement of space/time in which the ripple of space/time minimizes the true lower limits of space.