Many porn movies are set in classrooms, and for the sake of believability the blackboards are covered with writing just like they would be if class were actually in session.
And while the audience typically doesn't pay much attention to the blackboards porn producers still go out of their way to write real stuff on those blackboards for some reason.
So a few years back the witty minds behind the surprising Safe For Work humor site Blackboards In Porn started figuring out if the stuff pornographers write on background blackboards actually checks out.
Here's an example of how ridiculously thorough their blackboard examinations were, based on the lead image:
(32F)U/2N = LU.4S(4/T)
4F(U/2n) = LU3S(4/T)
F(U/2n) = LUS(4/T)
FUN = LUST
Mathematics – GCSE level.
Algebra may mean ‘reunion of broken parts’, but there's no happy reconciliation for this equation. It is quite impossible to make FUN=LUST as there is an error in each step of the calculation. The basic rule of manipulating equations in this way is that whatever is done to one side of the equation must also be done to the other side. This rule has not been followed:
– At the second step, the left hand side has been divided by 8, but the right hand side by 4/3.
– At the third step, the left hand side has been divided by 4, but the right hand side by 3.
– At the final step, the left hand side has been multiplied by 2NUN-1, but the right hand side by T2/4.
Taking the first line as the starting point, the closest to FUN equalling LUST that can actually be achieved is FU/2N-1 = LUS/T.
The teacher could have instead started with 2nu/ts = (2/f)lu, which can be rearranged to show that fun=lust. (Although nuts flu does sound rather like something that may be a result of too much fun lust.)
If the teacher is looking for a way to show how fun algebra can be by making words out of the symbols, she might instead try asking her students what the volume of a circular pizza of radius z and height a is.
2/10 A nice try in engaging students, but riddled with errors.
(Answer: pi.z.z.a – now that is fun!)
-Via Dangerous Minds