nipple mouse

n. Var. clit mouse, clitoris Common term for the pointing device used on IBM
ThinkPads and a few other laptop computers. The device, which sits between
the g and h keys on the keyboard, indeed resembles a rubber nipple intended
to be tweaked by a forefinger. Many hackers consider these superior to the
glide pads found on most laptops, which are harder to control precisely.

