I know exactly what you mean...noah is pretty well out of that stage now but when he was younger we would go to a friends house or something and they would ask if he spits up much .I would always say no because he never really did. 5 minutes after the conversation, he would spit up on himself, or on their carpet.
My friend brought her little girl over here, she's younger than Ava. Her pee leaked through her diaper and she threw up all over our carpet. Nat swears that she never does any of that. It was funny! Then we met up with them in Walmart the other day and Ava had the bottle in her mouth, but wasn't sucking and when I took it out she smiled at Nat and the milk just came pouring out of her mouth. I was so embarassed. It's the first of many I guess.