1 definition by fully (sic)

An expression of admiration or enthusiasm for a person, thing or action. It can stand alone as an exclamation but is frequently used as a modifier to qualify something as excellent. It is associated with Middle Eastern and Mediterranean Australian English, as explained on the Australian language blog Fully (sic).
"Fully sick, mate!" (stand-alone exclamation)
"Your car is fully sick, bro" (adjective)
"I will call on my fully sick boys" (modifier)
by fully (sic) September 1, 2010