look up any word, like fleek:
A laser piss is when you piss in a straw and connect it to an air compressor. The speed at wich the piss exits the straw is comparable to a laser, thus, laser piss.
''You can't piss a 800Km distance to reach my head''

''Watch me engage a laser piss upon ye!''
by Baab32 November 05, 2013