Trying to translate 遊ばにゃ損なってなもんだろうがおう！

Question

I'm reading a manga and have run into a tricky phrase, so I am asking for help and some explanations:

...遊ばにゃ損なってなもんだろうがおう！

遊ばにゃ (or にや) - can't understand what the verb form is used here...

損なって - "failing", that seems clear

なもん - have no idea how to decipher this one...

だろうがおう！"can do it" or "let's do it" and exclamation おう, depends on the previous context, as I understand?

Answer 1

I think the individual parts of it are:

• 遊{あそ}ばにゃ → 遊{あそ}ばなきゃ → 遊{あそ}ばなければ (see also 遊ぶ)

  unless one plays/unless one has fun/unless one enjoys oneself

• 損{そん}

  loss/disadvantage

• ってなもん → というなもの

  (mainly for emphasis, I don't think it changes the meaning much here)

• だろう (the plain form of the polite でしょう)

  I think

• が

  though

• おう！

  (an exclamation, sometimes translated as "oh!" or "hey!" etc)

...遊ばにゃ損ってなもんだろうがおう！
...遊ばなければ損というなものでしょうがおう！
...It's a loss if you don't enjoy yourself I think though. Alright!

I think that translation loses a lot of the feel of the original colloquial text though.

EDIT: For the time being, I've assumed the "な" was a typo. Also hopefully fixed the exclamation part.