"The female factor"

For my husband, who always refers to this sort of thing as "the female factor" — that, when planning a trip, you must factor in 20 extra minutes per female.  And he should know, since he's lived in a houseful of females for years.  Not only has he had to factor in me, but also our two daughters.  In fact, even our dog and cat are females.  Ha!  Sorry, hon. :)  And Happy Anniversary!