I agree that it may be hypercorrection. Or it could be he's secretly Ukrainian. lol.

About the hypercorrection.. Many Philippine languages don't have F in their phonemic inventory; it's usually substituted by P. But still, the F sound is taught in schools as part of learning English. Anyway, my aunt and grandmother tend to hypercorrect. Saying stuff like FARTY instead of PARTY. Lots of laps. I mean laughs. hehe.