what do you do when you lose a Queen in chess?

a.do your best

b.give up

c.other

B and C.

Swear loudly, and resign. Unless it was an intentional queen sacrifice/ queen trade. Obviously...

Depends if you give up as a sacrifice or you lose it without compensation. If it's without compensation, I'd resign. If it was a sacrifice for checkmate or position, obviously not.

a. Do your best

It really all depends - How strong is my opponent?  Did I lose the queen on purpose?  What stage of the game am I in? 

There really isn't a stock answer to this question, really, except for one: It depends!

Either a)take their queen in response

or       b)execute the forced mate that I sacced the queen for

However, to answer the question you're trying to ask, there isn't a cut-and-dried answer, but, all things being reasonable (i.e. semi-competent opponent, no compensation, no time pressure), I resign

Immediately attack his queen/king with all my pieces. After a couple moves, if I haven't made any progress and don't have any hope, then I resign.

this is the order of events after i lose my Queen:

1. I say "oops"

2. I slap my forehead & call mysef an idiot.

3. I vow never to do that again (I've made 100 such vows so far)

4. I try to reverse time (hasn't worked yet)

5. I revert to practising my french and say "C'est la vie"

Something like that. Usually, I play on, unless I know my opponent will destroy me, because a nine point disadvantage doesn't guarantee a loss against an overconfident and/or unskilled player.

In the order of:

1. Headdesk

2. Play on

3. Resign if it wasn't intentional.

Funny.  In a recent game I hung my queen pretty early -- before move ten.  My initial response was to resign, but then I thought it would look like I was pouting.  Played on with predictable results and resigned about 10 moves later.

I find it interesting that you headdesk whether it was intentional or not. Decoy tactic?

Queen or pawn.. same to me.. it depends on the position.. even a loss of surprise pawn can result in disastrous position and I may quit while a loss of Q in inactive state may still have some hopes of counterattack at some place.. most often these hopes are shortlived offcourse, but if they are there, I playon for some time

If it was over the 4th of July weekend...i sac'd my queen to force a perpetual check and a draw.

I offer a draw, and if declined, I intentionally let my time run out to annoy my opponent. It's not my fault that God let this happen.

I would headdesk just to make it look blunderous, even if it was. :3

For me it depends. I will play on in most cases, simply because I'm usually playing someone who I've never played before - that goes for OTB and for Chess.com games. I'm not going to assume that my opponent is immune from blundering his/her queen right back at a later point.

However, there are certain people I play with regularly in OTB games and I know for a fact that I'm doomed if I lose my queen, so I'll likely resign.

As others have mentioned, however, a queen sac for some compensation is something I would have thought out beforehand, so of course I would play on in that case... That's the whole point!

c. Put it back on the board when my opponent isn't looking.

In order for me to play on after losing my Q, or Q for a minor piece or Rook, I would have to either have some positional compensation or a complete lack of respect for my opponent's skills, or both.

If I have nothing to show for the lost material, and believe my opponent to be a nominally competent player, I resign.

Resign. The game has just ceased to be interesting.