The over-use of the letter "k" where a "c" or "ck" would have done. Often done by rappers and people with an over-developed sense of self satisfaction. Also applies to the use of the letter "z".
" Yo bitchez !!! dat krunkin waz klassik!!!
"tik tok on the clok"
"ima sing me sum tik tok-ism cuz i iz badazzzz