What does this mean? Second sentence confuses me


The sentences are : 本当に頭を使わない男だな もうチンコだけになってしまえばいいのに

First sentence seems to say "I'm a man who really doesn't use my head." But
the second sentence is where I get confused. It contains some grammar I'm less
familiar with, and with my low level japanese skills it looks like something
along the lines of "i'd be fine if i just become a penis" but I'm pretty sure
that isn't right lol. Any help with the anatomy and meaning of this sentence
is appreciated.

(Edited after realizing this was two sentences, thanks Eiríkr Útlendi)




It's probably referring to somebody else (rather than the speaker themselves).
It's not impossible that it's referring to the speaker themselves, but
unlikely.

Anyways:

> 本当に頭を使わない男だな  
>  You really don't use your brain (or he really doesn't use his brain)

Now to:

> もうチンコだけになってしまえばいいのに

`〜ばいいのに` translates roughly to `I wish 〜 happens`. For example, you can say
帰ればいいのに、もうずっと住めばいいのに and so on. It's often used to convey feelings/yearnings
(rather than literally describing ones actual wishes). For example:
明日から戦争のない世界になればいいのに、みんな億万長者になればいいのに

`もう` translates roughly to "given the situation". When combined as `もう〜ばいいのに`,
it roughly means "Given the situation, they should give up and 〜" or "Given
the situation, they might as well as 〜". It's hard to explain but basically
implies something has build-up which would justify 〜.

For example, if you say `退学になればいいのに` it simply means you wish they get
expelled. If you say `もう退学になればいいのに` you imply there was some kind of build-up
that justifies the expelling (for example, maybe they kept not showing up to
class etc.).

Back to the original sentence, the speaker first points out the person really
don't use their brain (and thinks with their penis) habitually ("You are those
types who really don't use their brain!). Then they imply if you hardly ever
use your brain and instead listen to your penis all the time, you might as
well give everything else up and become a penis.




It's probably referring to somebody else (rather than the speaker themselves).
It's not impossible that it's referring to the speaker themselves, but
unlikely.

Anyways:

> 本当に頭を使わない男だな  
>  You really don't use your brain (or he really doesn't use his brain)

Now to:

> もうチンコだけになってしまえばいいのに

`〜ばいいのに` translates roughly to `I wish 〜 happens`. For example, you can say
帰ればいいのに、もうずっと住めばいいのに and so on. It's often used to convey feelings/yearnings
(rather than literally describing ones actual wishes). For example:
明日から戦争のない世界になればいいのに、みんな億万長者になればいいのに

`もう` translates roughly to "given the situation". When combined as `もう〜ばいいのに`,
it roughly means "Given the situation, they should give up and 〜" or "Given
the situation, they might as well as 〜". It's hard to explain but basically
implies something has build-up which would justify 〜.

For example, if you say `退学になればいいのに` it simply means you wish they get
expelled. If you say `もう退学になればいいのに` you imply there was some kind of build-up
that justifies the expelling (for example, maybe they kept not showing up to
class etc.).

Back to the original sentence, the speaker first points out the person really
don't use their brain (and thinks with their penis) habitually ("You are those
types who really don't use their brain!). Then they imply if you hardly ever
use your brain and instead listen to your penis all the time, you might as
well give everything else up and become a penis.

