My man, you have now been given advice from Yogi1 and dagill2. If there are two people here to listen to, it is them, trust me. Now go lift weights for two years and clean up your diet.
I also used to refer to "skinny-fat" as my default body type. I thought I was at a disadvantage to leaner, more muscular people. I thought I would have to work harder than they did. Then I started busting my ass and something amazing happened. I am a leaner, more muscular person. And it turns out most of those people I looked upon with envy had just put in more work than I had. Nobody is naturally lean and muscular from sitting on the couch all day.
The funny thing is, now total beginners look at me and say "well of course you can do that, you're lean and strong" and they say it like I've always been that way (just like I used to do). Then I show them pictures of me before training and tell them how strong I was when I started (and it's almost always weaker than they are).
If you glean one sentence out of this post, it's this: do some fucking hard work.