noun. to give someone twos on a cigarette is to smoke half of it then give them the rest to finish. More commonly done by boys as it is less considerate.
verb. to "twos" a cigarette is to smoke one together, taking a couple of
drags then swapping. More commonly done by girls.
"I met this well safe
tramp the other day; he gave me twos on a rollie"
"That's so dirty..."
"Don't worry babe; tell you what, lets have some wine and twos a fag outside"
