Can you overdose on Orajel...?

You know how it is when you're on your way to work but you've got a tooth that's killing you (my fucking dentist, don't even get me started) so you stop at the drug store and get some maximum strength super-duper Orajel, and then, back in your car you try to open it, but the little tip thing is sealed and apparently it's made of carbonite and you don't have anything as useful as a pin, or a pair of scissors, so you decide to bite the little fucker off, and you bite, and you chew, and gnash at it with bared fangs, and suddenly, without warning it EXPLODES and now you've got a huge gob of it in your mouth and you might puke, but then your whole face is going numb to the roots of your hair? Yeah, it's kinda like that. 

It's a little like snorting coke, but without the high.