A chick with boobs so off proportion that one of them seems to be a completely different size and height. Example one tit is of a 21 year old perky 34c and the other is of a 55 year old 38dd. Lop tit.
I think we can tell which tit was the favorite of this woman's kid. She's got one tit a c cup at eye level and one tit a d cup at belly button level. Lady has the definition of lop tits.