slang conjunction for "go on ahead"
1. Confirmation of a positive act. A supportive comment.
2. a "passive aggressive" threat foreshadowing that bad things will happen if the behavior in question is acted upon
1. You: I just hit three bulls eyes in a row!
Me: Gon'ahead with your bad ass.
2. You: I'm going to change the channel cause I am tired of watching BSG
Me: gon'ahead and try it and see what happens fool.