It may just be the French way of life, but…
Compare the pretty standard wheelchair priority sign with that for pregnant ladies and mums. I don’t think I’ve ever seen such a flirty depiction of a mother with child in a supermarket – mini skirt, high heels, coquettish hand on hip, leg hoisted up on the stroller.
From my own experience with three boys, the typical picture of a mother with impatient kids at a checkout is a rather different one!
Mind you, it may make the men look twice and remember to let mums to be and mums that are go ahead in the queue ;-)