I was once shown a rapid checkmate that involved sacrificing your queen (to one of the opponents knights if I remember correctly) in order to achieve the mate. I cannot remember exactly how the sequence went but would like to know again. Does anyone know anything about the method of checkmate? Thanks.

Perhaps you're refering to Legall's Mate? 1.e4 e5 2.Nf3 d6 3.Bc4 Bg4 4.Nc3 a6 5.Nxe5 Bxd1 6.Bxf7+ Ke7 7.Nd5#

I'm unfamiliar with a trap involving knight takes queen.

ps. of course there are variations on my example

the only why that i want to lose my queen is if i lose then checkmate withen a couple moves.