Style doesn't mean realistic, if you want to make a sort of "joke-comic" which is centered around gags and supposedly funny-stuff the last thing you need would be realistic characters because realism has a serious quality to it, you'll have some guys reading your comics then when you make a joke they take it serious. Like your second panel with the stick figures, if it had realistic characters it wont even be remotely funny, just like...Okay...2 friends...
Stick comics are common but you can still use other simplified cartoon methods even if your characters are "ugly" or wierd this will actually make their actions more humorous.
Alternatively if you insist on using realistic characters, your comedy needs to be serious comedy, where your jokes are not really like gags but more of sarcasm, satire, you know non slap-stick/ punch line stuff. It needs to have edge and more "mature" humor.
You will actually have to study
Humor itself for that sort of thing and watch more shows like Daria which has a lot of sarcasm and mature humor. or if your going for something with a more weird/unique style you could watch more Beavis and Butthead which is silly but the fact that those guys are idiots ( and their drawings bring this out ) makes it funny.
http://www.youtube.com/watch?v=aI4YaLJKFw4
http://www.youtube.com/watch?v=BJV9Lq9X9Uw
Either way no one enjoys reading half-assed work and I'm saying this in the nicest way possible.