A contraction between the two words, can and I, used when one is too lazy to say them separately, thus slurring the two together.
Similar to other contractions such as I'm (I am), wouldn't (would not), and they're (they are).
Other spellings include: kai, chi, ky, k'i.
Person 1: C'i have some of that sandwhich?
Person 2: Yeah dude, here's a neeblé (see Neeblé)
Student: C'i please take a nap?
AP Statistics Teacher: Only after you learn about Chi-Squared.
Person 1: C'i get yo digits?
Person 2: Bitch, please.