football game.“Mike, you’re playing like Betty White out there,” jeered one of his chums. White, flat on the ground and covered in mud, fired back, “That’s not what your girlfriend said!”The instantly-viral video helped spark a Facebook campaign called “Betty White to Host SNL (please?)!,” whose half-million fans led to her co-hosting “Saturday Night Live” in a much-watched, watch-hailed edition that Mother’s Day weekend.