I think it depends purely on how horny the guy is feeling when you go down on him...

My B/F is uncut and sometimes I can suck him off in 3/4 minutes... other times I can have him in my mouth for 10 mins and he still hasn't cum...

well Ok as long it is only the stopwatch part, you can do all the testing on my uncut member :)

Well Grumble I have to tell you that I'm very dedicated to the name of science, it might take a very long time to collect all the data!! I hope you are up to it!! <wink> LOL

I would think that the fore skin would protect the head from coming in contact with anything like underwear. Where as with someone cut the head is always rubbing something. There by being less sensitive. I am cut and have pretty good control for intercourse. But when it comes to head I know my lady is wanting to get me off so I just go for it.

Well I am cut and it definatly takes me awhile to cum.

Well, im cut and the longest ive had a girl go down on me for was about 30 minutes, and the shortest was 3 minutes. It depends, but I find it very hard to get off on just getting oral. The one time where I did get off just from oral, it was in public so there were other factors stimulating me.

Volenteer
 

I am a cut guy but for science i would be willing to help out in the experiment.