Stuffing

Step One:Get someone to tie you to a chair.
Step Two: have them funnel feed you so full you are short of breath.
Step Three: Repeat

Have you ever used a beer bong?
Start with that and water and see how you react.

If you're in to being tied up, you have to make sure that you're not likely to gag or aspirate anything as you won't have the mobility to stop and could loose the capability.to.signal.

If you can,work.with a feeder who's got good experience

I didn’t try a beer bong or funnel but piping bags used for baking worked well. I had a feeder once fill it up with a mix of chocolate pudding and cream and it was amazing

I enjoyed using a beer bong and the sensation during and after was incredible but I wish I had a rig (or feeder lol) to hold the funnel. I got tired of holding it for myself

That's really amazing