Q: What do you get when you cross a pig and a rat?
A: (pig)(rat)sin(theta)
Q: What do you get when you cross a mountain climber with a virus?
A: You can't cross a scalar with a vector. (See, viruses are sometimes called vectors! heh)
Did you hear about the high ranked opera singer? Yeah, he was a tensor. (Tensor analysis jokes... )
I'm on a page about incorrect corrections, and spent the better part of like two hours trying to get someone to understand that -5^2 = -25, not 25, and then that post had comments get reposted because that group is self sustaining, and that person was in turn trying to explain what I just explained to them. And I'm taking that as a victory