A "drama club" is either a specific group of people (the sorority girls) that are known for engaging in drama, whining, or complaining, or; a single person who does the same.
"Those girls are so nasty to me."
"You know they're all in the drama club."
Or
"Everything I wear is trash. No one is going to like this. It's so ugly. Its not good enough!"
"Okay...so someone joined the drama club...."
Described as a way to show you are in agreement with something someone else just said.
To think alike.
When writing you may use the " ' " symbol to repeat a word just written.
"I've had a really hard day at work."
"Ditto."
When writing; "I love to run."
Ex. "I ' ' ride."