The term used to describe the hideous, vaginal
bulge often spotted in obese and older women. A McGregor is particularly noticeable in tight
trousers; "dustbin bag full of yoghurt" is a good metaphor for this phenomenon.
The McGregor often conceals a pork
pie.
"I would have shagged her, but I was worried that her wobbling McGregor might crush my cock completely."
"If you continue
eating at such a
rate, you'll soon find a monster McGregor stretching the seems of your
underwear."