There’s an art to knowing when to get out of a bit — rescuing “We Saw Your Boobs” with “The Way You Look Tonight,” showing off the singing chops. Classy. Bringing out Charlize, Radcliffe, Channing and JG Levitt. Nice.

And still. The Bit. Goes on. Jesus.

Sally Field/Flying Nun gag? Oh my.

The versatile MacFarlane is here. But also the lowbrow, leering, sophomoric, sexist one. Funny here and there, tho. But “Start. The. Show.”