A variation of 2cool4u. When someone acts like s/he is "too cool" for something/under a high-pressure situation, not necessarily school per se, but something deemed to be of importance, such as relationship, work, family, or even YOU.
Girl: I graduated from Y School! Are you an alum too?
Boy: I went to X School, then Y School, cuz I didn't feel like finishing my degree at X.. Then I transfered to Z School.. Can't remember anymore. Anyway, does it matter?
*Boy lights a cigarette*
*Girl whispers to friend (Hel-lo Mr. 2kool4skool!)*
Refers to a 2-panel comic or sequence where a character initially expresses overconfidence only to get defeated and/or humiliated. The term originated in the manga fandom, and while it has SFW origins the term is now mainly used within hentai and yiff communities, where it is often used in a pornographic context.
Anonymous R34 Artist: "Wow I should post more instant loss 2koma. The one with Goku and Spongebob really popped off!"
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.