oh, you don't know what karlson is? karlson is just the 19th most wishlisted game on steam. it's a face paced fpsshooter that the youtuber dani is making
person 1: have you heard of karlson?
person 2: no, what is that?
person 1: oh you don't know what karlson is?
The Karlson Kay is a noun describing somebody who says "kay" at the end of most every sentance. For example, he or she might say "I'll be over at 4, kay?" In almost all cases, the person will say kay in an annoying and or irritating voice.
That lady has a KarlsonKay at the end of every sentence she says!