Lyric discussion by mr._Grieves 

Cover art for A Wooden Horse lyrics by British Sea Power

i can beleive it, not alot of people know about bsp and it's a shame... or they just dont use this website : P ... but if you look at it a bit more literally, it tells the story of the Trojan Horse (that's what i thought when i first hear the song name and before i heard it) "Oh bring it in and let us see it" would be the citizens of Troy thinking this is a perfectly nice gift, "Yeah I'm ready to to kill" is like the soldiers inside waiting to attack and syaing they are ready... but it could also be more metaphorically like your explanation, or someone using a facade to get close to you just to use you