The action of loving something so much that you uncontrollably push it into your mouth. The resulting action also causes residue around the mouth.
Mate you are destroying that KFC bargain bucket. You love it in and around the mouth.
Brian: Did you watch Game of Thrones last night?
Steve: Yeah man, I watched it 3 times it was that good
Brian: Of course you did, you love it in and around the mouth.
Its means you love someone no wait its even more than love because every second of your life you want them by your side on the good days and the bad one and no matter how hard it gets you stick together for the rest of your life