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An antiquated form of cheating used in the 70s by competative swimmers and track runners.

An athelete has some of their blood removed prior to a match (far enough in advance that the body regenerates the lost blood) and then immediately before the competition redeposits the extracted blood in their body. This process gives the athelete highly oxidated blood which enhances their performance.

It is no longer done as nowadays advanced performance-enhancing drugs can replicate the effect.
The swimmer was disqualified after their post-meet testing revealed them to be blood doping.
doping by Jack April 2, 2004
Related Words

bible dumping 

The act of using God as an excuse to break up with a significant other.
Carlee: I think God is trying to tell me we just aren't going to work out.

Jessica: I really want to be with you, but God has different plans for me.

Ron: Why is the bible dumping me?
bible dumping by Truth Bringers March 21, 2009

Dumping Shard 

Is a naturally occuring phenomenon, that happens only once in a persons life.

It is an event of expellation of human waste equal to the force generated by 10 subsequent earthquakes.

It usually fills 5 meters of the human intestinal tract at one time.

Scientists believe its cause to be linked to the pulling of the moons gravity.
Friend 1: Hey man, just wait a second, I got to drop a dumping shard.
Friend 2: I'll prepare the ceremony outfits.
Dumping Shard by Hell Rebs January 10, 2008

tag team dumping

When two people go "tag-team dumping" it is similar to tag team wrestling except that after one person has dumped they leave the toilet without flushing and the second team member goes in and dumps on the existing dump. In a competition format the first team to block the toilet wins.
Belly Boy & Big Kev make a great tag team dumping team - the amount of orange juice those guys drink in the morning means they can dump for Britain.

Heard the noise when the big bald guy from the office next door is taking a dump - he'd be a great tag team dumping partner!
tag team dumping by Dukeface May 13, 2010

sky dumping 

a somewhat childish although greatly amusing practice of excreting from great height in unusual places.
The Cooker (looking up in tree): "Dude, what the hell are you doing up in that tree with your pants down?"
Pete Dick (dropping a crap into a parked car's sunroof: "sky dumping, dumb ass"
sky dumping by Pete Dick March 5, 2008

Dumping Ass 

A person can be said to have "dumped ass" when one drops a large poo-load during a most inconvenient time in a most inconvenient place
Today at the gym, Lance stopped in the middle of a set, ran to the bathroom, and dumped some major ass. Dumping Ass is his favorite pastime.
Dumping Ass by doc_sarvis June 12, 2010