The first game I ever played in a chess club went like this (I was Black)

[Event "Chess Club"]
[Site "Hereward School, March"]
[Date "1972.??.??"]
[Round "?"]
[White "Stacey, Ian"]
[Black "Regis, David"]
[Result "1-0"]
[ECO "C20"]
[PlyCount "7"]

1. e4 e5 2. Qh5 Nc6 3. Bc4 Nf6 $4 
(3...g6) (3...Qf6)
4. Qxf7# 1-0

Oh dear!

OK, I haven't been caught like that since. What should Black do about this?

Well, we're OK up to move 3. The "??" means it's a blunder -- I just didn't see White's threat, and was keen to shoo away the Queen.

(That's a common chess mistake -- being more interested in what you can do that what might happen to you!)

Much better are the moves: (3...g6) (3...Qf6) shown in the variations.

Another trap to avoid:

[Event "Opening Traps"]
[Site "Qh5 attack"]
[Date "1972.??.??"]
[Round "?"]
[White "White"]
[Black "Black"]
[Result "1-0"]
[ECO "C20"]
[PlyCount "7"]

1. e4 e5 2. Qh5 g6? 3. Qxe5+ Qe7 4.Qxh8 1-0