Swedish Rudder is the act of masturbation with a friend manipulating the forearm of another friend in an up and down motion while the male holds his own penis. This can only be completed in totality if the male ejaculates into a fan spraying his male friends in the face.
"Steve from accounting gave Kevin from HR a Swedish Rudder, well because Kevin is a fucking freak and HR peeps deserve a lil nut in the face."