Heh, I think I got the answer. I'll give you a hint..
There are two references, one's definite, the other is debatable.
1) Definite:
It wasn't a woman, it was Robert Duvall..
Movie: Colors (1988)
He noticed Pac-Man (Sean Penn) watching the latinas hard and said " You need to get you one, they'll make you strong, like bull.."
Do not confuse this with the OTHER bull reference he used, about to old bull and the young bull on the hill..
2) Debatable: Depending on the director's cut or not, Denzel Washington used the reference that made the DC's DVD and not the release of "Training Day". The reference was on his ability to please a woman and sire only sons..
But I think the "Blazing Saddles" reference is the closest..
Just someone think a woman said it and it got screwed up..