when he is an Arsenal fan
friend: my new boyfriend is an Arsenal fan!
me: omg! cut that bitch off hes a red flag
A girl who acts dead during sex, but is also the biggest hoe in the multiverse.
Don’t talk to her, she’s a walking red flag.
Takes Latin, has 5th-period lunch, went to Spring garden and or Radcliffe, has a cardboard cut-out bad people, short,
Christian O'Brien was a walking Red Flag
A symbol of Socialism and the Socialist revoloution
Person 1: someone i know has a red flag in their room.
person 2: that means they're a Communist!