What's __ That Could Happen? Dr Pepper's Tagline

This page is the CodyCross answer for the clue below from Amusement Park, Group 203, Puzzle 3 (Height Restrictions).

Question is: What's __ That Could Happen? Dr Pepper's Tagline

and the answer is: THEWORST

Word Meaning:

THE — Used before a noun phrase, including a simple noun

Definitions from Wiktionary.

What's __ that could happen? Dr Pepper's tagline — CodyCross Answer | CodyCross Solutions