<human>: Can you summarize the given text in a few sentences?

At my Asian gf's parent's house. Both of us over 21. I'm white and have a gnarly beard. Parents gone. While chillaxing, we hear a knock at the door. It's some guy trying to promote some cause about workers or whatever. Both my gf and I are pretty damn awkward people. She's holding her dog (to pose a threat I guess?) as she cracks the door open to this guy while I'm standing on the stairs nearby. She tried the wise move of telling him her parents aren't home (she can definitely pull being <18 off) and so the guy persists and asks "Are you under 18?"  She of course said no. Guy persists and sees this 6ft white guy (me) standing in the back, who clearly is not family. Asks if I'm under 18 (I'm clearly at least 23). I freeze and say then "No thank you." He gets the "Is this guy a fucking pedo?" face. We manage to get the door closed and a free pamphlet about workers. That's basically it. Small fuck up, but I spent the next 2 hours fearing an officer at the door.
<bot>: Gnarly beard and being white with asian gf who can pass as 16 year old probably made a door solicitor think I'm a sex offender.