When I was in hs my gf at the time would blow a 20 something yr old dealer for weed before she got with me. When we both wanted to smoke one time but didn't have any money I told her she could blow him again, it became a regular occurrence. When she got back she'd always be soaking wet so she clearly enjoyed it too. She came back with extra one time too and I asked why and apparently she rimmed him for a bonus, when I asked if she could do it to me she said no.