Well you can search the languages to prove it

Ability to write english and any other latin alphabet languages upside down; Ability to write russian and Cyrilic Languages upside down; Ability to write chinese, japanese, korean, tibetan and languages in the indian subcontinent upside down; Ability to write arab languages and amharic, georgian and armenian alphabet upside down; Ability to write egyptian hieroglyphics perfectly upside down; Ability to do math without any typo upside down correctly