Yeah. I actually bought into this facepalm, shoul have learned not to listen to my mum years ago. Apparently all babies in our family are late, and at least 8lb, nearer 10, and some have been 11. All were born with a two hour labour 
First was a very fast emergency section. 2 weeks early, 7lb. So there was i not having mat leave booked for another 3 weeks, nothing ready, no pram or car seat, only 0-3m clothes which were all huge. When dh phoned about the section my mum stormed up to the hospital as she thought i was dying, because "that just doesn't happen in our family".
My sister had a 10 hour, textbook, 1cm an hour labour. Bang on due date, 7.5lb. 2 hours after dsis had gone down to the labour ward, mother was phoning me in a panic saying we should have heard by now, labour is only a couple of hours, and if we hadn't heard something must have gone terribly wrong, because "this just doesn't happen in our family".
Bloody convincing she was, and she really honestly believes labour should be 2 hours max. Don't know whether i was more barking letting her convince me too..