How can I manage to suck myself off?

I want you to cum for me. I am right now sticking my huge dildo in my ass and trying to write this as my tiny dick gets harder and harder. It's in me now all 12 inches and I'm grinding on it, playing with one nipple and trying to type this with my other hand as I think of your cock going deep into my mouth, this is awesome, I've never been so hard, cum, cum in my mouth, I want to taste you and swallow you. Oh yes I'm, I'm ahh cumming, thanks to you!