Speaking of which, this is serious.
Now, as for what your wife may be feeling, I confess to oversimplifying in an earlier column when I denied that suckling could ever feel anything like, well, sucking. Of course it can. Not only are the sensations superficially similar (although I don't advise partners to do the weird rhythmic press-and-swallow thing while making a fishy-mouth face, not sexy), we have only so many physiological responses available to us. Nursing can feel good, and it releases the same hormones that sex, or rather having had sex, does. I'd even venture to say that the release of good feelings (mostly hormonal-emotional, but to some extent physical as well) is adaptive, evolutionarily speaking. Then I'd say that that's all very well but we have evolved pretty far and we can keep these things separate and I heartily encourage us to do so. More later.
Andrea is home with the kids and going stir-crazy. Write her a letter! Ask her a question! Send her your tedious e-mail forwards! On second thought, don't do that. Just ask her a question.