If you tell someone to count you in, you mean that you want to be included in an activity.
She shrugged. ‘You can count me in, I guess.’
? count out
PHRASAL VERB: usu imper, V n P
If you tell someone to count you in, you mean that you want to be included in an activity.
She shrugged. ‘You can count me in, I guess.’
? count out
PHRASAL VERB: usu imper, V n P
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012