General

I think it would be fun to have someone have a buttoned that adds a pund to me. There's two buttons a rest and a gain button. Then I give it to someone who would want to watch me gain weight. The catch to just having them spam the button is for every 5lbs the button increases it's force required to be pushed so like if they made me gain 100lbs the buttoned would take 20lbs of force to be pushed in. And the button has no range so they could push it at any time anywhere. I could be at work and all of a sudden I'm 40lbs heavier or I go to sleep then I wake up 100lbs heavier. It would be fun to see how someone would use the button.

I like the idea of relinquishing control over my body and submitting to the will and desire of another person, so this is appealing.
Also, the scenario of “waking up huge” is intriguing—like Franz Kafka’s The Metamorphosis (wherein a man wakes up in the body of a giant insect).
I’d enjoy using the gain button on my ‘victim’ each time they go to the gym to work out, or maybe when they’re in the middle of a run.

Honestly that sounds like a fun idea and a great way to gain weight, the only issue I see is being out and all of a sudden your clothes starting tear because of the extra weight gain or start to become to big because of the reset. But then again that doesn’t sound that bad. You just have to bring in extra pair of clothes or 2. Maybe have a screen where they can choose where the extra weight goes. Like oh 5 extra more pounds in the waist or 10 more pounds in the hips, etc. that would be fun.