While misclicking was a term popularized on the internet for mistakenly betting an amount you didn't mean to, it can still happen in live poker under certain circumstances. A live misclick cost Arshin Gamini a few extra chips recently.
Daniel Cascado opened the action with a raise to 32,000. Action folded around to Gamini who reraised to 93,000. Action folded back around to Cascado who tanked for a bit, then put in a four bet to 187,000.
Gamini opened his and said, "Misclick." He then threw his hand into the muck. Apparently he only meant to put in two green T25,000 chips, and not three. Because of his bet sizing, he ended up folding his hand. and Cascado scooped the pot.