Similar to the dutch rudder, where person A takes person B's arm and manipulates the hand to masturbate person A.
Bartok: So, I dont want this to be gay or anything, but could you perhaps give me a dutch rudder??
Denes: Dutch Rudder! Fuck the Dutch! I will Magyar Oar you until your penis resembles a magpie! Now give me your dick!
Bartok: Ooooh yeaaaaah.