Only if our two dicks were in another man's ass. Putting my dick in a girl's pussy with another guys dick, that just sounds way too gay.
Oops, what I meant to say was "Hell fucking No." If I have a perfectly fine woman there, I just can't see how saying "Hey dude, come over here and throw your cock in there with me" would ever enhance the experience. It would be like saying "you know, riding this motorcycle is fun but it would be so much better if I also had a monkey straddle my face".
See Dick fuck Jane. See Dick say no to other Dick.