My DS (7) makes the odd, innocent, jokey, reference to (MFIL)grandad's fat tummy. DP is mortified whenever it happens (which is seldom) and tells me off for having a DS who has no manners! He is a good boy and really doesn't mean any harm. Obviously, I've told him not to joke about grandad's tummy because it may upset him, but the odd moment still happens. At Easter lunch DS said 'if I eat too much pudding I will get a tummy like grandad'. Is that really so bad? The thing is, grandad is REALLY FAT and it is probably about time someone told him!