You don't need abs to be fit.

Unless having a 6-pack is a personal goal of yours. Avoid it, it's over-rated.
I'm going with the other guys opinions, get more mass, and bulk up.

I was 6" 130 lbs. at 18 (almost 5 years ago), now I'm at 175, and I still think I look damn skinny.

Eat everything in sight as the others said, concentrate more on actual foods, such as pastas, meat, you won't get fat..
And if you do, well, that just means you have to start hitting the gym more.

why are abs so important? just your personal fetish?

You wouldn't know the feeling of fapping and cumming onto some hot ripped sweaty abs you fat fuk!!

Mono?

If u mean creatine monohydrate that makes you GAIN weight

Abs are simple,
cardio = abs... every1 has ab muscles, but you need to get your body fat percentage lower.
Cardio and eating right gets you abs.

I just like the look... Like to feel/be fit.
Mono as in sick for up to like 6 months

looks like you need a personal train

Slightly.

can I try it on yours?

Yes!