She sort of gets what he's saying... She's been dealing with translating round-about juggalo-speak enough that a little rambling is nothing. So, his clarification doesn't fly completely over her head.

"I'm Terezi. I've been here since before the last arena, but you haven't been hanging around. I would have noticed." In that, he's not a troll that she recognized either personally or by association. It's a little weird, but she honestly thought that the must have been pulling from SGRUB-related trolls at first. Obvious not, if this one's here.