a) great or intense sex or other sexual acts
b) can be a broader reference for falling for someone, becoming captivated, or falling in love
(for emphasis, often followed by adjectives such as bad, hard, somethin' crazy, somethin' aweful...etc)
b. Girl, I don't know what it is about him, but he's really gettin' to me. I didn't think I'd fall for him, but he's really put it on me!
Barbera: Ok, but i want you to put it on me too that big ol donkey dick