Nobody mentioning 3D printing? :(
For those un-enlightened in the ways of making inedible spaghetti: Hair spray is often used as a makeshift adhesive to make your prints stick to the printer and 230°C is conveniently around the temperatures you print most stuff at.
(I know it's not hair spray, but it would be more funny)
I'm happy as a cis dude, but I'd be lying if I said I never thought to myself "hey, what if I had a 1m dick? or none? or both at the same time...?"