The "split kick" is a kick that is performed to one's enemy. This kick is delivered directly to a persons bottom lip. This term has dual meaning in that it is performed by doing an split in the air and it also causes the persons bottom lip to split wide open when delivered correctly. The term "split kick" is most often used to describe attacks in video gaming.
I was running away from the cyber ninja and then out of know where he jumps up and "split kicks" my lip wide open!