Guynamic - the girl to guy ratio at a social gathering orchestrated by girls from an all girlsschool, and the way in which this affects the overall ambiance.
"Dya think we've got a good mix of people coming to Bea's party?"
"We should probably invite Luke and Ollie, you know, to improve the guynamic"
An extremely tall and dominant basketball player - "Wow, that guy is ginamic!". A very large and aggresive animal - "That bear is ginamic!". A huge and far-reaching disaster - "Because of their fraud, that company is a ginamic failure".
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).