The exploding pumpkin

It's not a euphemism for some kind of sexual act (it might be...I'll have to refer to urbandictionary when I get more time). This goes down in some classroom with a science teacher way cooler than any I had in school.

I bet he makes the students call him by his first name and stuff. Yep. Happy Halloween.

Oh...and I think it goes without saying:  Don't Try This.  Thanks.