I always laugh when people say...
"I never get drunk" or "I don't get hangovers".
Not that I'm calling these people liars, but they really need to come for a drink with me to learn the truth about themselves.
For instance, a friend of Mrs.MM always said she never got hangovers. So when we all went out together I kept us all in the same round (of drinks) and started getting chasers (double vodka's) with every drink. When we were waiting for a taxi after closing, this girl was face down on the floor passed out. When we saw her next, she confesed to spending the whole next day in bed, very very ill.
That'll learn her.