Well, does it?
I’ve wondered yet not give as big of a shit as to why Collision has some girl as his sig.
It’s probably a reference I’m too damn stupid to get.
My avatar is from one of the album covers of a band called Madness that I started listening to awhile ago. I thought it looked cool so I edited it a little and used it. Just haven’t found anything I liked enough to replace it with.
My sig is from a manga that I like.
So I suppose no higher meaning like you were asking about.
Jack Nicholson kick ass.
/who doesnt know this
You asked. That’s why I have him in my avatar, also because One flew over the cuckoo’s nest is my favorite film.
Sarreh.
/rare on the internet
For mine, I just have it on another forum that I got banned from for making multiple accounts.
It’s just a neat looking cropping I did of some pic I found.
Avatar currently Chell from the comic Lab Rat (Page 25), edited very slightly. Why? Well, Chell is cute in this drawing. 
Sig currently a saying from Doc Brown from Back to the Future. It’s good advice, Marty.
I didn’t read Lab Rat so I thought it was Mila Kunis for a second,
My avatar shows my interest in the show My Little Pony: Friendship is Magic.
The fact it annoys people is an added bonus.
I have used this avatar in all forums, everywhere, for as long as I can remember. It’s my steam one most of the time.
Signature? A friend made the gif for me one day, and the rest is just oldfag material
My Avatar is just a mix of Half-life and James Bond, because my favorite classic FPS games are Half-life and Goldeneye. My sig is an ad for my about half-done goldsource mod, an answer to one of Breen’s questions at the end of HL2 (Asshole asks a question, but doesn’t do it where Freeman has access to a mic) and a friendly link for new members.
Both my avatar and sig speak the truth.
Coll’s sig is just what I’m going to assume is he waifu.
It doesn’t annoy me.
It just freaks me out.
My avatar is just cloud, because i like FF7, but aside from that it doesn’t mean shit.
Then I would like to shake your hand.
My avatar is a pic of myself that I use everywhere.
My signature has a link to a failed video review project I made a year ago (I should get back to that), and a quote I came up with while driving to work one day.
It doesn’t annoy me, it just points out a person I should treat with disdain.
I used to have a good burger avatar that made people rage.
Changed to Flintstones, and someone (too lazy to go into pm box) asked me for the thing, but too lazy and lurked.
Then came back and changed to my steam thing, no particular meaning except to convey that Simon Cowell is indeed, a beaver.
Then ferrets.
Then you and I think alike.