Adventures in Vampiresitting / Phlegm Ball

S1, E4: In an effort to show her friends that humans are not to be feared, Mavis dons a 'human' mask and knocks on the Cartwright’s front door. But when Kitty mistakes her for the babysitter, Mavis is dragged inside and suddenly finds herself trapped INSIDE a human house! / Mavis ditches Wendy in favor of a more competitive teammate as she plays a disgusting game of Phlegm Ball against her cousin Klaus form the 12th century.