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1.
starring as though you are crazy, threatening glance
Mofo, you mad dogging me?
av Fred77054 5 september 2006
 
2.
means you're giving someone mean & threatening looks or someone else is giving you mean or threatening looks
I walked into the bar & some dudes were maddogging me. I started mad doggin em back!
av dfajr 4 februari 2010
 
3.
synonymous with over working. Someone who extends way too much effort for their job/work. In sports when someone plays over the top hard defense when down 50 or chases after every loose ball even though the game is over. In everyday life is when a low waged worker asks hundreds of questions and tries to overcharge and harass customers. In video gaming when a gamer works ridiculously hard on one task (like they mad dog trying to kill one specific player and disregard other tasks)
The McDonald's employee was mad dogging when he launched a small scale investigation of whether water was in my water cup.

Ryan was guilty of mad dogging when he obsessively hunted his brother in Battlefront.

Wallace was mad dogging on defense despite his team losing by over twenty points with his hard and dirty fouls
av KingOfTheStreets35 7 november 2010
 
4.
mad dogging or dogface as its called in prison is a expressionless glare ostensibly used to intimidate but is actually often a way for gay men to recognise each other if its combined with other signals such as a lock of eyes
Mad dogging is a way for men who are not obviously gay to hit on each other.
av Choybalsan 23 juli 2008
 
5.
Having gay butt sex
the man mad dogging with his friend last night
av John Wyan 7 april 2010
 
6.
Showing off in front of someone else's girlfriend or boyfriend
Jay, why you mad dogging?
av getatme92 23 mars 2008