오랫만에 프렌즈의 첫번째 에피소드를 다시 보게 되었는데, 대사 중의 하나가 이해가 안 되어서 여쭙니다.

로스의 아파트에서 로스, 챈들러, 조이 셋이 로스의 새 가구를 조립하다가 대화를 나누는 부분인데,

ROSS: You know what the scariest part is? What if there's only one woman for everybody, y'know? I mean what if you get one woman- and that's it? Unfortunately in my case, there was only one woman- for her...

JOEY: What are you talking about? 'One woman'? That's like saying there's only one flavour of ice cream for you. Lemme tell you something, Ross. There's lots of flavours out there. There's Rocky Road, and Cookie Dough, and Bing! Cherry Vanilla. You could get 'em with Jimmies, or nuts, or whipped cream! This is the best thing that ever happened to you! You got married, you were, like, what, eight? Welcome back to the world! Grab a spoon!

ROSS: I honestly don't know if I'm hungry or horny.

CHANDLER: Stay out of my freezer!

(중간에 다른 장면 - 생략 - )

ROSS: (SCORNFUL) Grab a spoon. Do you know how long it's been since I've grabbed a spoon? Do the words 'Billy, don't be a hero' mean anything to you? Y'know, here's the thing. Even if I could get it together enough to- to ask a woman out,... who am I gonna ask? (GAZES OUT OF THE WINDOW)

그리고 음악이 깔리고 레이첼이 창밖을 내다보는 장면으로 이어지죠.

여기서 로스가 "Do the words 'Billy, don't be a hero' mean anything to you?" 라고 말하는 게 어떤 맥락이고 뜻인지 감을 잡지 못하겠습니다. Billy Don't Be a Hero 는 노래 제목인 건 알겠는데..

혹시 아시는 분 설명 좀 부탁드려요.