by GimpHater January 8, 2011
Get the McNiffmug. A true veteran in one's sport; usually in open competition. Typically part of the sport/game for thousands of hours and commonly referred to as an "open veteran".
by thisisthedoctorspeaking February 11, 2020
Get the mcniffmug. a weak male who is bad at video games, particularly csgo, pubg, fortnite, along with any other game.
by whatasexiboi96 May 16, 2018
Get the Mcniffmug. A dishonest human being with a very cruel attitude. If you are a caelan mcniff im sorry for you. You may have horrible birth defects like a geneticaly macroscopic penis.
by Weston dall January 25, 2019
Get the Caelan mcniffmug. usually a weak beta male. gets dominated on most occasions, but cites the opponents victory to luck.
by moetviskyleyeet December 2, 2018
Get the mcniffmug. boness farter mcniff
by big rodder December 7, 2018
Get the mcniffmug.