Munchies:
Here's a fun fact. Your lower stomach - specifically the space between your navel and your mons - is an erogenous zone. Try teasing and massaging that area on a stuffed belly. It'll feel amazing.
Effervescentfetish:
Wait what does everyone have that? I thought it was just me XD
Edit: oh and to respond to the original prompt, it's practically impossible for me to pleasure myself without cradling my small (for now) overhang. Even before I started gaining that was something I liked but now it's almost compulsory for me lol
Yup, everyone has it. Even if you are thin as a rail, it's still an erogenous zone. It's just stuffing makes it more intense.
When you stuff yourself, you get more blood flow to your abdomen to aide in digestion. On top of all that, you have all this internal pressure making you more sensitive. So if you stroke, rub, or otherwise tease the area, you feel extra good.