Just watched a discovery channel show on death row today. Last meal is different by state. Some serve whatever the chow hall is serving, I think it was Oklahoma that will give you whatever you want up to $15, another state was $40. Just shoot me. No death is instantaneous. But the gas chamber takes 4-7 minutes with lots of suffering and choking, hanging might take a while after your neck snaps, lethal injection is just paralyzing your lungs until the third drug is injected to stop your heart, (about a minute, long one), and the electric chair sometimes takes more than one jolt, with lots of burning flesh. Firing 4 rounds into your heart should stop it quick, with about 10 seconds of awareness until all the oxygen in your brain is depleted. Yup, just shoot me.