Doing it... in the future!
Futurama's Dating Advice
When you think of Futurama's long, broken run, it was only when the show reached Hulu that one cast member was with another cast member long enough to spawn children. Amy Wong, of the Mars Wongs, somehow managed to get "reptilicus" (the spineless, cowering, weak, floppy, green, annoying alien aide to the magnificent Zapp Brannigan) to get her pregnant.
Of all the creatures Amy could have dated... and there were many... Amy chose the most annoying, the most clueless and the most terrified gelatinous blob, by far the least useful of any character, including washbucket. So ignoring the unsightly mess that Hulu made (a celebration of trends that died 1000 years earlier), which of the characters was the most prolific at banging the other characters? Gotta be Bender, right?