This I can assure you is no word of a lie
I went back to college 6 years ago as a mature student to finish my A level physics that I never finished the first time because shagging Mrs Sandettie in fields and on the back of the bus was far more appealing.

My teacher was the same teacher I had 15 years previously and we were reminiscing about the other science teachers from way back when. "Oh, Tom went off to such and such college, Graham retired, Chris emigrated" etc. Then I asked him about 'Gerry'.
"Gerry? The man was an idiot" he said. "Me and Tom were in the faculty room discussing how to better teach about terminal velocity with parachutes when Gerry walked in."
Gerry pipes up, "It's weird how when they're falling and they pull the cord, they fly upwards"
Now, Gerry was a teacher of A level physics and electronics. It's clear where he got this idea from. Freefallers with cameras on their helmets (oo-er).
He wasn't cut out to be a teacher, and is now a head of a poorly performing school somewhere. And not liked at all. On ratemyteachers, somebody put:

"Thinks the key to success is shouting at people and trying to be intimidating. Strangely in most schools thats called a bully - in ours he's the head"
( sandettie light vessel automatic New Twitter - @bollocksreally, Wed 9 Mar 2011, 17:50, 4 replies)

See, this sounds like the kind of thing I'd say
For a joke.

Or to see how long a certain of my friends will lecture me on the laws of physics before noticing my barely suppressed grin. And lob-on.
(MrOli is ugly, but in the morning you will be sober, Wed 9 Mar 2011, 21:51, closed)

you get aroused
By telling people silly physics?.

Mind you, I did when I once told someone the pythagoras theorum using the third power.
( sandettie light vessel automatic New Twitter - @bollocksreally, Thu 10 Mar 2011, 8:45, closed)

Wow
You nutter.

Bet they believed you, too.

I hope everyone laughed at them for being far too serious and then told them all about Elliptic Curves, lol!
(MrOli is ugly, but in the morning you will be sober, Thu 10 Mar 2011, 9:40, closed)

Inexcusable for a teacher I suppose
but I had quite a job convincing my then 5 year old daughter that a football thrown from a fast moving roundabout went forward, not backwards.
( Not Pineapple anymore, Thu 10 Mar 2011, 11:17, closed)