English Slang collection：
call it a night
[释] to stop doing sth and go home;
[例] Pam decided to call it a night after dancing for five hours.;
call out
[释] to challenge someone in some way, e.g: a fight;
[例] Jim's calling out Shawn now. They just got into a serious quarrel.
call shotgun
[释] to claim the (front) seat next to the driver in an automobile;
[例] A: Hop in! I'll give you a lift. B: Can I call shotgun?;
call the shots
[释] to be the leader;
[例] This is my plan, my office, my company, so I call the shots!
camper
[释] someone who comes somewhere to do sth, but just sits down and watches;
[例] Come on! Don't be a camper! We're here for skiing.;
can
[释] bathroom;
[例] Hey guys! Hold on a minute, I gotta visit the can before we start the 2 hours drive.