This wasn't hugely embarrassing for me, just because I don't embarrass easily, but many of my peers told me they would have been extremely embarrassed.
Since they banned us from weighing in and going thru skin checks naked or even wearing just a jockstrap, it seems more and more we have female trainers or other "medical in training" types doing the skin checks, even tho most of us still wear very little clothing, even as little as some wearing bikini briefs.
Usually there is a break between weigh in and skin check and I go take a hot shower to get my blood pumping, then put on my jock and a loose pair of shorts to stand in line for skin checks.
This particular tournament, I hadn't done that yet and just had on the loose shorts with nothing on underneath. I had at least a pound to spare that day so wasn't worried about the few extra ounces shorts add. It was still common for guys to forget and if they were over weight would strip or strip to their jock and get up to re weigh, which would get them reprimanded by the officials. So my teammate was really just trying to get my in trouble so to speak.
Just as it was my turn to step up the the lady doc doing the skin check, one of them pantsed me, in the process yanking my dick downward, and thus its natural reaction was to bounce back up some--right into the eyes of the lady who happened to be bent over looking at a red spot on my abs that I guess she suspected of being ringworm or something, it wasn't. The friction of the shorts sliding down, plus the bouncing, plus the unexpected breeze sent more than enough blood flowing south. The lady became totally flustered, immediately signed off on my paper without finishing the check, one of the guys yelled out, "wow, looks like she just saw a big snake" (how appropriate I thought). Fortunately everyone around was to busy laughing at her reaction to even pay attention to me.
I pulled my shorts back up and went on to the showers.