to initiate closer contact with an unsuspecting member of the opposite sex by offering them an airplane blanket that is far undersized for two people to fit under.

also refers to such blanket used for this purpose

a phrase chiefly used in northern England.

it is a contracted form of "it'll be reet", where "reet" means "alright" or "OK".

living your life according to "be reet" is the only way to find happiness in life.