I've had a 2 moms ask and "whip them out" at pick up. They were both first time moms and they got anxious when their baby starts to fuss. Plus their breasts are usually pretty full by the end of the day too so the mom obliges. They really only do it once or twice when their kid first starts then they stop. I think they feel guilty that they left their child but also want to reconnect with them once they see them. I think they catch on that a private moment at home is usually nicer (I only have childrens chairs so they also have to sit on the floor).