You can
milk anything with nipples.
( Hokerou, Wed 7 Nov 2007, 15:58, archived)

I have nipples Greg
Will you milk me?
( MrPineapple .co.uk - TSHIRTS FOR SALE. I GIVE YOU GOOD PRICE., Wed 7 Nov 2007, 15:59, archived)

See that bull over there?
Go and try it....
( Mrs Trellis has her two Misses Trellises at home :), Wed 7 Nov 2007, 15:59, archived)

can a robot have nipples
...?
( Prof UnderCover NOT DRUNK ENOUGH, Wed 7 Nov 2007, 15:59, archived)

mechanical nipples!
*greases*
( Dr. Strange Apparantly those were the droids I was looking for, Wed 7 Nov 2007, 16:06, archived)

If you search for 'grease nipples' on google
make sure you have SafeSearch on.
( chenobble rocking his explorer beard on, Wed 7 Nov 2007, 16:35, archived)