A webcomic? Good luck.
First of all, I'll rate the picture itself. The style is very Saturday morning Disney, like The Weekenders or something. It looks good, and I wouldn't feel bad reading a webcomic done in that style.
The hands are drawn rather awkwardly, the character situated atop the front man's head looks like he or she (can't tell which sex it is) has stolen Droopy's ears and I'm not a big fan of the circular noses you gave a couple of the characters looking forwards, but other than those it looks fine.
I feel like the circle should be filled up more. As it stands, the picture is rather unbalanced with nothing on the left side of the circle, and everything piling upwards. It feels a bit side-heavy.
Now onto rating my first impressions of the idea of your webcomic bsed on this picture and your description.
First of all, the name 'Asinine Circus' is terrible. I would make a point of not reading anything called 'Asinine Circus'. The title doesn't flow well, and I really have no desire to read anything that would describe itself as 'asinine' (a word I've only ever used as an insult). It's definitely a bad first impression I get from that name.
The characters, again based on my first impression, seem to be quite generic for a webcomic. At a glance it would seem that you've got your typical straight man at the front there, with the wacky other male lead right behind him (not referring to the kid on his shoulders). I'm guessing these two are good friends despite the stupid things that the guy holding the Xbox controller does.
A little bit behind the two you've got your obligatory female character that keeps it from being a sausagefest. I don't know her personality, but I'm guessing that it's largely centred around her being a girl (this being the general trend in sole female characters in webcomics).
Then you've got the ridiculous non-human character that turns up in every single bloody webcomics, and that I've never liked in any single one of them. Looks like it will be another character that does crazy things and just generally annoys straight man at the front.
The kid character is a hyperactive kid that goes around being a crazy hyperactive kid. I can't tell if it's a boy or a girl so I can't really make a proper judgment on what its personality is. I'm guessing that, again, it makes life hard for straight man.
I'm not too sure of the guy at the back's place in the generic characters that are present in everything. I'm guessing he goes around complaining a lot, being sarcastic, and generally hating everything, but that's all I can think about his character.
Your description of the thing is really what makes me wary of the comic. 'Stupidity, absurdity, pop culture refereces (sic) and down right asinine behaviour' are attributes of almost every uncreative webcomic out there. And almost every webcomic out there that follows that description is terrible. There are so many bad webcomics that just follow the mold of having stupid characters be stupid for no reason, and having a straight man decry their behaviour.
I'm guessing that that guy in the front there is your author avatar? Is he going to be the one expressing your views on things the most? I don't know.
This is all pointless guess work of course, but those are my initial impressions of your little advertisement, and it goes to show exactly how quickly people like me can make up their minds about things.