What are you thinking right now?

[Minty]

Head over heels refers to doing a somersault, usually with regard to someone you love.

To make an elephant out of a mosquito? Isn't that a punning reference to Johann Wilhelm Meigen, the German entomologist who was the first to properly classify all the different types of mosquito around & show not all of them were dangerous bloodsuckers - one of those being the Elephant Mosquito, which lives off pollen, rotten fruit & the larvae of other mosquitos. His work was controversial in his day, mainly because he'd rendered every other textbook on the subject redundent overnight from the sheer detail of it, & that's where the joke came from as he'd literally made an elephant out of a mosquito in terms of the knowledge jump & the name he'd given one.

If this was Call My Bluff, no doubt everyone would be saying Bluff by now!