Is it normal to wanna f... a teach?

i have no idea why, but here's a TRUE story.

I walk into school and head to my locker. typical day, until i got to social studies. i walk in and my teach, ( who is smoking hot, but really strict) says "...., see me after school!" and i'm standing there thinking, " WTF? what did i do now?" so, i got my stuff from my locker, and went upstairs to her class. i saw she wasn't in the class when i walked in, so i looked around and she closed the door when i walked in and locked it. she was wearing nothing but panties and a bra. she grabed my coller and tossed me on a desk. " ahh, ms. ... get off me!" " no, i want to give you extra credit." and the second i got the chance, i ran out of there. the same thing happened again the next day though, and i can't stop thinking about if i should or shouldn't. IIN?