Tyrus and Kat celebrate Kat's "21st" birthday.

Tyrus explains the main difference between his dog, Sugar and Kat dog, Karl.

Kat reminisces about her favorite Halloween costumes.

Hot Topic: Kat's fiancée Cam shares what he used to get trick-or-treating.

Follow Tyrus on Twitter: @PlanetTyrus

Follow Kat Timpf on Twitter: @KatTimpf

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