That's the dumbest shit I've ever heard. Just cause ur 180lb at 6ft doesn't make u small? I've met guys 160lb at 6ft 1 with 19inch arms and there weight was due to the fact there bone structure was Ecto and they were super lean. Weight doesn't define mass or anything else.
Oh, and a 6ft 1 guy that weighs 160lbs having 19" arms is a load of bullshit.
I'm a hair under 6'2 and at 160lbs, I was under 10%bf and my arms were like 14".
19" my ass.
I'm 255, and If I was 4%bf dry, I'd be about 215lbs and guess what, my arms would be about 18.5", my bis peak damn well, my tris sweep and hang and I'm top heavy over my legs. 55+lean pounds above "this guy".
So, don't tell me a 160lb dude at this height had 19" arms. Lies bro, lies.
"Weight doesn't define mass". You might want to take an introductory physics class to help you out there.