Jasper

(Jasper) noun: a middle to upper class person, more specifically a
student. This is a gender neutral term which is usually applied to both men and women. The use of it comes from the old money/extravagant names given to people from said backgrounds.

“Look at that posh Jasper twat over there with his permed mullet, drinking half an IPA, he’s clearly pretending to be a chav”