From The A-Z of HaPenis Massaged, a guided lingam massage/meditation featuring the 26 basic strokes that every man should know.
F is Frenulum Flutters
Press the base of your each thumb on either side of the Frenulum. Massage in deep small circular motions without actually touching the Frenulum
R is The Rainbow Rub
Borrowed from the sexological bodyworkers. Place the palm of your hand on the man’s frenulum. Cup your fingers around the head of his cock till they reach the corona ridge. Without moving your fingers rub your palm against the frenulum. Use the palm of your other hand to rub his forehead.