Yes, padding is now more common including not well done (Sommerfeld). Consistency from photo to photo is key to ruling it out but you need to have an interest in scanning and studying.
But mainly, natural visibilities help distinguish:
Or IfBB Pro Malachi, zero possibility of padding if you scan all photos included in thread below:
If you're smart or the bikini maker is creative you make the padding a bit uneven, balls hanging uneven, fake glans showing through and so on LOL. You might need to essentially make a prosthesis haha. It's possible and might be worth it, maybe even if you're straight, say you're a physique competitor popular with girls. Pics are forever. Cocks are serious business, men do risky surgeries for a fake cock that might not even work properly later

Dan Duchaine said Anadrol seems to make the cock hang bigger LOL. It doesn't make it bigger per se of course. Same with the ED drugs like I mentioned, can make it much bigger looking even when not aroused due to more blood flow. There's a surgery where you cut the tendon attaching the penis to the pelvic bone. It's just to for example make it hang lower in the gym shower. Might cause erection problems but you don't want to be made fun of by other men. A training partner was really cruel to another lifter. He reportedly had a huge member, never saw it myself. But I heard once he was in the gym shower and shouted at another guy, "you are weak as fuck, you have small biceps AND a small cock!!!" LOL asshole.
On a bodybuilding forum several member were using
Trimix and similar, a drug injected into the penis with a fine needle before sex. If the common ED drugs don't work, what you gonna do?

Gotta be careful with the dose, an erection lasting more than 4 hours can damage the penis. Treatment for priapism: a big needle or butterfly catheter inserted to drain the penis. Bodybuilders also use HCG to make the balls bigger although it doesn't serve any real function. Some claim their GF might be unimpressed and maybe leave them otherwise
