hey, I was the most skinny kid at school and after. Girls used to get me to sit on their lap and say I had the boniest ass they had ever felt
For me, a diet of 2 pints full milk, and 3 eggs a day in addition to normal food intake.
Weight training (many repetitions of weights) not a few massive lifts worked. It took time but I went from
112 lbs at 19
168 lbs at 21
196 lbs at 25 !
(sitting down in an office and the weight (fat) piled on.
I'm 154 lbs now and have been for years.
People can be so incredibly cruel in what they say.
The girls I've known have always helped my ego with their wonderful kind compliments and comments.
you take care and I can almost guarantee you will one day have a flabby stomach like most 30 year old guys!!!