k cool real mature
you say this when something bizarre just went down and you're like 'what the hell is happening now' and you're waiting for something else to go wrong or someone to tell you to do something stupid
'K cool real mature' after your dog ate your homework and your teacher just told you to do it again
'K cool real mature' when your friend spilled soda on your laptop and now you have to rewrite your entire essay
'K cool real mature' when your mom yelled at you for eating pizza for breakfast and then your dad said you had to clean your room