Any wives any ideas or thoughts

I was wondering if anyone would know of any sexual positions that my wife and I could do where I would keep falling out being that I am so small!! And she would laugh and get fed up with me falling out of her all the time so she would stop and say that's it no more fucking for you!!! And locks me up again!! Thankyou in advance

Double Vaginal Penetration (DVP) where you are on bottom, she lies down on top of you, you put your dick inside her pussy, and the other man (ME) looks down on her face, kisses her mouth, then shoves his large cock up next to yours inside that same pussy. You feel his cock piston against yours. You see her moan and kiss his mouth. You shoot your sperm from the feeling of his cock against yours. You shrink and fall out. He keeps fucking her and both he and she ignore the fact that they are still on top of you. Your cum has made her vagina even more slippery and fun for the man on top of both of you. Do you want him to cum?

Nice idea