It is an association with several humans that:
1)Are unable to plan/ sort out there lives
2)Have the mental age of either a 3 or 18 or 50 year old (no inbetween)
3)Can be very entertaining when they need to be
A well know fact is that Slug Club is always hungry and ravenous for other people's lunches and snacks but in the end they go to the canteen which is there holy grail.
There well known habitat is the library but Slug Club is known to migrate to different places.
Overall they are a lovely group and you will never get bored when you are surrounded with these pure perfections.
"I'll see you tomorrow, I'm going to hang out with Slug Club!"
by Pro0rastinat0r! April 19, 2021
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Originating in the Harry Potter series by J.K. Rowling. Was a play on Professor Slughorn's name and his continual favoritism of students.

(Used usually after the words "in" or "part of".)

To be a teacher's pet without trying or even wanting to be a favorite. Most people in the "Slug Club" are called upon to answer questions, do unnecessary tasks and will receive numerous compliments from their teacher.
The student will be thoroughly embarrassed, which the teacher remains oblivious to.
Student 1: Oh no! Did you see how Professor kept pointing out how perfect my potions were today? How humiliating!

Student 2: Welcome o the Slug Club, mate.
by SusanBones September 14, 2010
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