Please send your questions for publication to prudence@slate.com.

Dear Prudence,

Please settle an ongoing dispute between my husband and me. My husband believes it is OK to floss his teeth while driving his car. (I am not making this up.) His teeth are very nice, but I believe this activity should be restricted to the privacy of the bathroom only. He does not see a problem doing this in public. Please respond.

Sincerely,

--Mrs. Floss

Dear Mrs.,

Prudie hesitates to ask what he is steering the car with. Flossing is not a one-handed maneuver. You are correct that it is not an activity meant for public viewing but, more important, seeing to one's dental hygiene while driving a car poses a threat to oneself, as well as to others. Do tell Mr. Floss that Prudie implores him to find four minutes to do his admirable oral upkeep when he is outside of his automobile.

--Prudie, nervously

Dear Prudie,

I usually agree with your advice 100 percent, but there were two cases where I'd have suggested something different. I wonder if we actually disagree, or if my solutions just didn't occur to you.