The use of another person to post tweets to your Twitter account, pretending to be you.

That thing Katy Perry does at her live concerts.

An untalented manufactured singing group that can't play instruments. They are all homos, but since they appeal to 9 year old mini-sluts with no pubic hair, they got rich. See the Backstreet Boys.

following behind an extremly slow person while trying not to hit the back of their feet

when you are calling someone that is calling you so you both go to voicemail.

Going to the toilet at the same time as someone else multilple times during the day.

to sing synchronously and in tempo with with a song being played.