assfrigger
A person playing with the asshole in a sexual way (with toys etc.) and also gets turned on by it till the point where the asshole gets loose and flexible. Pretty handy for anal sex.
Source: hentai manga
Source: hentai manga
Guy: Damn girl, your asshole is pretty loose!
Girl: That's because I'm an assfrigger since I'm 13.
Girl: That's because I'm an assfrigger since I'm 13.