When DD, now 18, was a baby, we lived very close to my (ex)PiLs, and we were together a lot. One day we were at their place, baby DD was in MiL's (retired schoolteacher, tho' can't remember if she was retired at the time) lap and fussing, and I was doing something else couldn't immediately get her or whatever. MiL was talking to baby DD "are you hungry, need boob?" and then she actually got out her boob and placed it in baby DD's mouth who began screaming and refused it. MiL laughed and I took DD and began feeding her. I didn't say anything, but I was kinda weirded if not grossed out by this, and MiL obviously thought it was perfectly normal since later she was chatting about this to anybody who'd listen "...DD was crying and even tried to give her my boob but she didn't want it..."
fast forward 17 years, we live in different countries and haven't seen (ex- although that was not the reason)MiL for over 6 years...
That scene still crosses my mind once in a while, especially on Mumsnet where people post shite about their PiLs all the time- how weird or normal was it? I only saw her do it that one time. She was pretty classic MiL in other aspects too, but that one really stood out.