A cow-culator. haha haha ha... ok, I'll leave.
Somebody left the plunger in the toilet.
Never leave your buddy's behind.
With a cow-culator! (Rimshot)
Where are the udders? (Thanks to my three boys for that one!)
Swigonometry.
It has so many problems! -Sorry doing a whole bunch of math today and i thought of this.
They use a cow-culator! Ba-dum-tsss!