whiz also whizz 
(wĭz, hwĭz)
(wĭz, hwĭz)v. whizzed, whiz·zing, whiz·zes
v.intr.
1. To make a whirring or hissing sound, as of an object speeding through air.
2. To move or do something quickly: whizzed past on a ten-speed bike; whizzed through her exams.
3. To pass quickly: The days whizzed by.
4. Vulgar Slang To urinate.
v.tr.
1. To throw or spin rapidly: The pitcher whizzed the ball to first.
2. To mix or spin (ingredients), as in a blender.
n. pl. whiz·zes
Idiom: 1. A whirring or hissing sound, as of an object speeding through air.
2. also wiz Informal A person considered exceptionally gifted or skilled: a whiz at all sorts of games.
take a whiz Vulgar Slang
To urinate.
[Imitative. N., sense 2, from shortening and alteration of WIZARD.]