Basically a really fancy name for something most straight guys, and some girls have; a fetish for boobs. Mazophilia is the clinical term for when any particular person is sexually stimulated by female breasts, and is probably one of the most universal fetishes among straight men and teenage boys.
Nurse with cleavage: "our test results show you have an extreme case of Mazophilia"
Patient:"huh?"
David: "I have noticed that my Mexophilia has gotten worse, when Jose, Juan, Jesus, Roberto, Luis, and Julio weren't enough to fulfill my urge at the same time."
Gabe: "Gee David, sounds like a real problem."