It seems like some people here have never seen/heard banter before, or played csgo or been on the internet. Sometimes people say words like these, and a lot of the time, if not directed at anyone, they mean absalutley nothing. This lad doesn't deserve to be banned for 3 days because of two words, you could've easily moved him out and explained what he said, as its very clear he didn't understand what he was saying.
To those comments by Pug, Deathrazor and Daki (or whatever), i'm 1000% sure you guys use the internet daily, and if so, you have been called/seen someone get called OR say something to do with the words he said. And a lot of the time, no punishment will ever come from it, as its merely a joke, and if you don't like it you have the ability to ignore it like any other regular human being.