ruddering 

When someone uses there hand to knock a standing man's flacid penis from side to side. The equivalent of motorboating.

Can also do 'tennis ruddering' when you use both hands and bounce the penis between them.

Also possible to do it up and down or with your foot.

Surprisingly satisfying for both particiants

Guy "can I motor boat you?'
Girl "only if I can do some ruddering of you after"
Guy " oh yes please"

ruddering by flemmimaid October 22, 2012

Ruddering 

When you stick your face in someones ass and proceed to 'motorboat' them

Man this chick has this huge ass I could spend all night ruddering her!

Ruddering by Demi-God.J January 10, 2011

Winona Rydering 

1. verb. When you let your cigarette burn down without ashing it. akin to the cut scene in the film "Girl Interrupted" where Winona's character is smoking and being questioned by a therapist... only to lapse into flashbacks and daydreams... letting her cigarette burn all the way down without noticing it and being asked by the therapist if she takes drugs.

person 1: Damn, you're really Winona Rydering that cigarette!

person 2: I know! Look how much ash there is!

*ash falls off in moment of stark sadness and failure*

persons 1 and 2: Ohhhhhhhhhhhhhhh.

Winona Rydering by silkenskyburningflak August 7, 2010

Rondering 

Being unaware of social norms and wandering for self-interest at the expense of your friends or family.

Where's Dane? He was right behind us.

I dont know. He went rondering.

Rondering by Nytorq December 25, 2016

rudening 

An erosion of manners, politeness and courtesy over a period of time, resulting in the extinction of such phrases as "Please" and "Thank-you" from the English language.

Rudening is what happens in a society when "Me" becomes more important than "We".

rudening by Planet Kirby January 11, 2010

rendering possums 

The act of taking a particularly smelly shit, especially in a public restroom, leaving a stench that lasts for hours and forces others either to gag or to hold their breath until they exit the facility.

Damn! Someone's rendering possums in the men's room again. I couldn't even stay long enough to wash my hands.

rendering possums by Decatur Thug April 25, 2016

uddering 

The act of juvenile masterbation using a downward pointed closed hand while palming the head of the penis.

His hand finally cramped up while uddering for the 3rd time that afternoon.

uddering by SJBrowneII December 25, 2014