He had one simple task, just to clean our apartment. After Poison took a shower and walked barefoot through the apartment, her feet get filthy.
Its simple. If a slave can`t clean the floor properly with his hands, than he will clean the girl`s feet with his tongue.
"Lick it all off !" Poison doesn`t care how dirty her feet are, he will lick and swallow all the dirt now. "Even the toes are so dirty! Also between the toes !".
"I don`t want to see a single bit of dirt !"