Alcohol shots that aren't meant to be shots
Like Wine, beer, or anything ridiculous like that, people tend to take shots with all sorts of alcohol as it is a good way of seeing how much you can drink.
Ugly shots are usually used by young snot nosed kids thinking they're cool, but some people do it for the fuck of it. Also see shots
"Man, why do we have to do ugly shots!?"
"Dude, just do it alright, i've had like 39 beer shots so far but I still don't feel anything."