Cuztwin
Your cousin that is born on the same day and year as you. You can read each other's minds. You'd be lucky to have a cuztwin. Commonly confused with twin cousins.
Cuztwin #1: I'm uploading a definition for cuztwin on urban dictionary.
Cuztwin #2: No way. I just did that.
Derrick: Darn. I wish I had a cuztwin.
Cuztwin #2: No way. I just did that.
Derrick: Darn. I wish I had a cuztwin.