Q. What do you get if you cross an elephant with a zebra?
A. Elephant zebra sin theta
Q. What do you get if you cross an elephant with a mountain climber?
A. You can't do that. A mountain climber is a scalar.
Q. What do you get if you cross an elephant with a banana?
A. Elephant banana sin theta in a direction mutually perpendicular to the two as determined by the right hand rule.