Nothing hits the spot more than cuckolding with a focus on the big boobies, especially when it involves titfucking. Your talkies have consistently hit the spot for me like no others. If you want more ideas, here you go. People tell me what ya guys/gals think
1) Coated her hubby's cock with mandelay so that she can titfuck him fast and because he didn't shoot in 5 mins, he goes back into the cage.
2) Have a scene where it's like 5 hours have passed by and his dick has sat unmoved in her big boobies. Unmoved, unpumped, etc. Even better if it shows a p0rn0 on a TV set of the wife totally pleasuring a lucky dick in her 32EEE boobies.
3) The hubby is tied up and his dick stays in her boobs, snug secure and still. Meanwhile he watches a hot woman nearby send a guy to cumming in her boobs.
4) A sex party situation. Again he's tied down in a chair in a room full of avid sex crazed party goers. The theme is that he's the one being mocked and teased the whole time while he has to watch lots of hot sex and kinky action going on. In fact in your talkie you could have it where a line of 30 big boobed women have a contest to see who can tease him in the most menacingly frustrating way.
5) All the women at a party possess remote controls to a securely and properly positioned vibrator/estim device (one having both functionality is the best) are told to tease him relentlessly. As a failsafe mechanism, the device attached to his cock will back off at just the right moment should a woman not have the timing down right. If one really wanted to be sophisticated, the device could have several motors/estim contacts so that he can be under simulataneous independent control by several different women at once.