And bad camera angle.
Yeah, i agree on having to learn how to flex.

The first time i actually tried flexing it, everyone was giving me the
"if u can't flex it, it's fats" BS.

That's superhuman dy bro...
The average guy can't even do a single chin.
I am one of them 

Be big n weak? Good luck man.

I beg to differ........
lotsa ppl say bodybuilders are weak.

They are not.
They're still strong...... just not the strongest people around.

Who dares call me weak?

my arm is 16" but my forearm is puny 12" 

my forearm prolly 9"

I know!

Plate pinches
Forearm curls
Towel pull-ups
Isometric pull-ups with thick bar
Any thick bar work
Rice digs (This more to grip only)
Wrist rollers
Actually those are more to grip exercises, but I seem to experience a little growth with these exercises.

You guys are big!

Bicep-15.5 in
Forearm-12 in

almost one year 8 months bulk kau kau...eat and workout and rest!! actually my initial target was to bulk until my bodyweight reach 90 kg but at 83 to 84kg also i feel like a cow d!!! hard to run cause bulky especially the lats pushing out plus my shirt size all became small...so now i tend to increase muscle size by only eating the right food and train lighter than moderate wieghts but keep my rest time strictly 30seconds!! trust me you don't wanna think of carrying heavy!! so right now i can concentrate on builidng lean muscle at the same time keeping my waist small!!