Most embarrassing thing to happen to you at a FIRST event?

[Billfred]

A few that come to mind:

Palmetto 2007. 1618's robot, then known as "What robot?", was powered by a CIM motor geared down not nearly enough because that's what we could interface with easily and cheaply. The arm was about 5' of PVC pipe with a window motor on the end for a grabber. What could possibly go wrong? Well, when the operator bumped the joystick with his butt in the pits and I was standing in front...

I apparently went slack-kneed for a moment, my jaw was sore for a week afterward, and the robot was immediately renamed Uppercut.

SCRIW 2014. After a joke about my lack of flying jump kicks while acting as the emcee, I decided to channel my inner Karthik during Finals 2. Never mind that I'm probably most of 100 pounds 45 kilograms heavier than him or that he seems to practice this way, way more. I finish the red alliance and start sprinting towards Blue 1. Duck the truss, avoid the robots, upppppp!

Apparently the coefficient of friction of my shoe on the diamond plate is higher than the coefficient of friction of my sock on my shoe. My foot immediately slips free of the shoe and I very nearly go headlong into the player station trying to stick the landing. I called Finals 2 and did teardown with a very funny walk.