It's your birthday and as your Mom I said you can do whatever you want. Maybe go to an amusement park? Or get a nice dinner? Or... Wait... you want what? You want me to fart for you? I'm a little unsure about it, but eventually you convince me to do it. I let out a few sitting on the couch, and then you ask me to bend over, sticking out my ass so that I can fart right in your face. After I give you a few of those, you ask me to pull my dress up, and my panties down, and let out some farts with a bare, naked ass! I'm so embarrassed, but it seems to be making you happy so I continue to fart as you lay back and enjoy it.