MST episode

[tabbyclaw]

I'm looking for an episode from one of the later seasons of Mystery Science Theater, and all I remember is the last host segment. Pearl has attempted some kind of neighborhood barbecue in her minibus spaceship, and she eventually brings Mike down for it. The scene in my head is the two of them sitting on the side of the bus and drinking beers, and this conversation:

"I have to ask you: Pearl, why are you so evil?"
"*thoughtful look* Well... I'm filled with hate, I don't know if that helps."

Found! "Time Chasers." Thanks to all who responded!