You know you're a noob at airsoft when:

[Doublewolf]

You think that the heaviest bbs are .2s.

You buy .12s because they go at a higher fps.

You think that the best gun is the Crosman Pulse R76.

You have only played in backyard games where you just shoot at each other until somebody gives up.

[Ociffer Action]

When you complain that airsoft doesn't hurt, when you've only been shot with a Crossman springer.

When you play with a clear gun.

When you post on every topic on the forums.

When you're used to paintball.

[slickridley]

when someone yells 'CALL YOUR HITS', in high wind or in heavy brush or using .20's
you still wear your paintball tampons
if you take your eye pro off in the field cause 'there's no one shooting at me right now'
if you call your china clone with plastic bushings a 'good gun'

[Doublewolf]

You expect to see a big paint spot on you when you get hit.

You keep saying, "How come nobody cheats? It would be so easy. There's nothing to tell you who's been hit!"

[GARRETT]

When you think making a 250lb 6ft 4 game rep angry is funny. 

[jarhead904]

when you start a thread about noobs to make yourself feel less noobish

[Pieman]

When dont no wut am best gun

[Arbee]

When you expect AirSoft replicas to perform like their real steel counterparts.

[Tzer1993]

When you went from Crosman .12s to Crosman .2s and thought, "WOAH!! TEH ACURCY IZ TEH BEZTEZT!!"

[slickridley]

When you expect AirSoft replicas to perform like their real steel counterparts.

QFT
if we all had dime a noob said this we'd all be millionaires

[Doublewolf]

When you are moving stealthily through the woods and somebody on the other team yells, "are you hit?", and you yell, "No!", and then a bb hits you in the head, and he says, "Well now you are.", and you say, "Crap!", and think to yourself, "I am an idiot."

[3rd0ptik]

When you ask all the players why are there no Barrel Sock's on your guns?

[jarhead904]

When you are moving stealthily through the woods and somebody on the other team yells, "are you hit?", and you yell, "No!", and then a bb hits you in the head, and he says, "Well now you are.", and you say, "Crap!", and think to yourself, "I am an idiot."

sounds like personal experience 

[GrimWulf]

Disclaimer: No offence intended here, I was a noob once too...

You know who the noobs are when:

You see the wild and illusive newb trying his hand at being a ghillied-up "sniper", but you watch him running full-out through the woods. (Hint: The only time we should see you is when you are coming on and off the field.)

The newbs refer to every magazine as a clip....oh, silly newb.

The Airsoftous Newbous has a strange mating call that sounds something like this: "Call your hits man, I know I got you!"
Another of this creatures mating calls sounds something like this: "Wow, bro, your guns are BEAST!" (I owed you one Tzer!)

[Bushmaster]

The newbs refer to every magazine as a clip....oh, silly newb.

Too true, their frickin' magazines not clips!