One day I was trying to Power Clean 155lb after failing to do so for several sessions at that point; I was ready for a reset and I was convinced I was going to fail again. After warming up, I loaded up the bar and took a pair of collars. Tried my first set and nope. Completely denied. Couldn't rack it.
Soon after, while resting between sets, one dude walked up to me and asked me if I was using the collars. I said I was and he left, seemingly pissed. I walked to the water fountain for a quick sip before my last set and I saw that same dude actually taking the collars off my bar.. He said he was taking them "because I wasn't really using them". I was so pissed 155lb literally flew off the ground and I racked it perfectly.