downing one 

downing one means drinking some spirits and getting durnk, used in dublin ireland.
used mostly by knackers (chavs)

that pic is of me fuckin downing one

downing one by Catherine x x x December 14, 2008

One-Downing 

One-downing is simply the opposite of one-upping.

Also known as a "race to the bottom." This tactic is used by everyone from fast food produces, horror movie directors, indeed the President of the United States of America, to shock people by showing them that the bar can still be lowered.

While many fast food producers are scrambling to one-up each with healthy offerings, KFC is one-downing them all the with the double down sandwich.

One-Downing by SearchFHG June 16, 2018