Duckbutt

Nickname given to Sasuke Uchiha of the manga/anime Naruto based on the shape of his hair.

Ugh, ANOTHER fanart of Duckbutt?

Are you going as Duckbutt this Con?

Duckbutt by Asdfghjkl;;;;;; November 8, 2010

Duckbutt

A depiction of tetrahedral geometry, especially in the discussion of chiral centers

Bromochlorofluoromethane can take on both R and S configurations, depending upon whether the Bromine, Chlorine, and Flourine increase in atomic number clockwise or counterclockwise around the central carbon; the Hydrogen is at the duckbutt.

Duckbutt by TBS_Amelia February 24, 2008

Duckbutt

Nickname given to the Grumman HU-16 Albatross, an amphibious aircraft used for transportation and antisubmarine duties from the late 1940s to the ealry 1970s. Now used by resorts in the Carribeian and the South Pacific as short range island-hopping airliners.

Duckbutt by JonathanChance September 29, 2003

Duckbutt

Rescue Aircraft sent ahead of single-engine jet fighters being delivered over ocean regions. The "Duckbutt" orbits along critical route segments, such as those for air refueling, and aids in rescuing flight crews, should a fighter need to ditch.

Movements of single engine fighters take place during repositioning to military exercise locations overseas, or the delivery of these planes from their overseas bases to repair depots. Bases on the Islands of Hawaii, Guam, and Okinawa are staffed with USAF Aircraft Delivery personnel. It is their job to coordinate with each agency which will service, repair, control, or Air Refuel the aircraft, making sure all of these operations run smoothly. One aspect of these efforts entails launching a "Duckbutt" aircraft (Usually an HC-130 "Hercules" four-engine turboprop) to provide rescue services for the crews if they ditch the plane.

Duckbutt by David L. Baker March 5, 2008

Duckbutt

When you stick your hand in a butthole, all the way to the wrist, and you make the hand the shape of a duck's bill and quack.

CRC-3 told Shania they would Duckbutt her. When she didn't believe them, she found out the hard way. They were quacking all night.

Duckbutt by Nuvabey January 18, 2015

Duckbutt

A condition where your ass only makes quacking noises when you fart.

QUACCCK! Oops, sorry. I got a bad case of the duckbutt.

Duckbutt by Cabe May 19, 2005

Felching For Duckbutter 

The two part act of sucking semen out of the anus with a straw while maintaining enough of a vacuum to get the greasy, and sometimes chunky duckbutter that runs along the taint.

Being careful not to miss a drop, and priding himself as a pro at Felching For Duckbutter, Gabe Athouse aimed his straw and inhaled every last drop of the load he left as well as the grimy, nutsack buildup.

Felching For Duckbutter by FupaGunt August 7, 2011