Was at a cafe today and a lady pulls out a potty and allows her son shit. Just there openly not trying to hide it. The cafe was packed full of people eating too 
Her friend then pulled out potty
and was going to get her
daughter on but we complaied before it happened.
The toilets were out of order however there were loos about 10 second walk outside
They both thought we were UR for suggesting they use the other toilets and we don't know how hard it is potty training twins ( we have twins in our immediate family).
One of them started crying and the shouted at us then left.
AIBU to think this disgusting and not something people want to see when trying to eat our lunch?!