I get wet and horny

When I masturbate I always start with my pussy, I get wet and horny but then I always cum from stimulating my asshole. Don't ask me why, I can't explain it. It is really nice to have a dildo, vibro or cock in my quim, but my ass is more sensitive. It really drives me wild! So I am afraid when they said to me to masturbate for this film I started with my pussy, then I had the vibrator in my puss and a finger up my ass and I came with the vibrator stretching mmy lips and hitting my brown G spot!