A very ugly attempt at slang for the phrase "going to". The word for people who wish they could use the much nicer sounding word word "gonna" but sadly still can't speak properly, even when trying to use slang terms. Besides just plain ugly spelling, it's one of the ugliest sounding words in the *human* language.
OMG I think I'm ganna die, this personality quiz said I have to choose between McDreamy and Zac Efron what am I ganna do with my life
by sneakybunny May 22, 2018
Get the gannamug. by Greenparty88 July 19, 2009
Get the I'm ganna paint the town greenmug. The drunk the bloke always down at the pub with a beer in his hand and a smoke in the other
Often called jimmy or gazza
Often called jimmy or gazza
oi jimmy stop being such a ganna get off the piss
(The piss mean an alcoholic beverage in Aussie slang)
(The piss mean an alcoholic beverage in Aussie slang)
by The-kid. September 2, 2021
Get the Gannamug. 
A name for the Wheelock ET70WP Fire Alarm Speaker Strobe is used by members of the fire alarm community and the person who started named them ganna's got the term from his school's Spanish voice evacuation message which has ganna in it and uses these speaker strobes.
by CaptainChris January 28, 2023
Get the Gannamug. 
by Master Keif November 22, 2021
Get the Gannamug.