If you give a Kelly an invite, she's gonna take you up on it.
When she takes you up on it, she'll probably get some of your other classmates to go to lunch too.
When she's in the cafeteria with you, she'll probably eat anything you order and consume massive amounts of sweet tea.
When she's finished eating, she'll want to greet all of her other students who are present in the cafeteria.
She'll start to chat with them. She might get carried away and chat with anyone else who happens to say 'hello' or be present in the cafeteria.
When she's done, she'll probably want to rest.
So you'll have to invite her back to your dorm room. She'll go in and make herself comfortable and she'll probably ask you to show her some pictures.
So you'll end up showing her pictures of your childhood and offering her handfuls of walnuts and dried yak cheese.
When she notices her pockets getting stuffed with that hardened yak cheese, she'll look at her watch and realize that it's time for her to go.
So you'll show her to the door, and some other students will welcome her into their dorm rooms and play songs for her on their keyboards and offer her more dried up things and hard cheese.
When she realizes that she might be there all day and end up with more dried things than her pockets or stomach can handle, she will insist that it's really time for her to go.
So you'll show her to the door and as she's leaving you'll remember to invite her to do something else on another day.
And if you give a Kelly an invite...
she's gonna take you up on it.