At least he was ragging on her to his family and not complete strangers.
Ragging is a very similar technique to sponging, only you dip a rag in paint rather than a sponge.
Ragging is much more versatile than sponging, as you don't get the mottled effect of the sponge.
I'm 12 and in 7th grade, but my parents are ragging on me about college already.
Ragging: using a rag, a sponge or some other item to make walls look aged or give a marbled or textured effect.