Either in foreplay or sexual intercourse, the act of grabbing both your girlfriends tits, and with your thumb and index finger rubbing the nipples as though you were tuning into a radio station
Mike) You're girlfriends tits are fucking massive
Steve) Yeah, i spunk up just by tuning radio luxemburg in
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Simon) Put that porno on James, I wanna see those 2 lesbians tune each other into radio lux
James) sorry no can do, i dont want ur juices all over my room