>>8664308
[Baku-π-dou (Kuchi VE)] Netorare Kaa-san - Boku no Daisuki na Kaa-san wa Shinyuu ni Netorareru… | Netorare Mother, My Precious Mom Got Fucked By My Friend…

This one has a good scene like that.
The son took the chance to win his mom back with his dick, and well, he got unintentionally humiliated by his mom (she was blindfolded) and realized he couldn't satisfy her with his dick.
I think Hana Hook might of had one of what your looking for.