Is he generally well at the moment? If not, straight to doc. Okay, now lets get really gross. Do they smell bad? do they float? if this is the case it might be over indulgence in a greasy diet or insufficient enzymes being produced to digest the fat. again go to doc. Is there pain, nausea? in that case probably food poisoning or tummy bug. to doc if bad or your husband has any other health problems, especially diabetes, otherwise, stop eating for 24 hours, clear liquids only then gradually reintroduce bland food. I hope this helps