Someone who changes their date(s) back or to the future on their calendar of their electronic device(s).
Kymie: I just caught my man changing the years on his phone, and he does it alot.
Hanna: Yea, he's a totally time looper...
... 3 years later: they ended the conversation, and they just realizes Kymie's man just left her an hour after after they started. So, Kymie and Hanna decide to have awkward sex... :Time Looper