Makes Mehmets go crazy. Like seriously, don't mention the word "kookies" in the presence of a Turkish males known as "Mehmet". If kept from kookies, a Mehmet is likely to explode into an extreme rage, similar to that of Schnoorlax when awaken.
Mehmet: Dem be kookies?
Mehmet: Me want kookies!! NOM NOM NOM!