lol why ask a question like this, if you was laying on your back unreponsive would you want someone to get you help. or go on a computor and ask someone who are not drs and cannot help you . omg whats wrong with people these days. just dont understand.
Get Gismo too the Vet ASAP it sounds like he has been poisoned, bitten by a snake or has a blockage.The only one that can help is your Vet so please take him now.
Let us know the outcome.