a place where people go to have sex at the top of a tall building and are almost caught when someone else comes up to it and immediately assumes no-one is on it. commonly used in anime and manga
person 2: lets go up to the roof
person1: " ahh ahhh jack its feels so good
person 2: shhh we might get caught
person 1: no one ever come up here well be fine
( door opens)
person 3 : well i guess there no-one up here might as well take a break
Mike: damn Jake look at the size of Sarah's bust
Jake: i know right it looks like her shirts about to burst
Sarah: perverts ( slaps both of them)
random letters people often use when flustered by a text
Mike: {texting} hey calla i thing your really pretty and i have a huge crush on you.
Calla { texting} jfdksghsugd