Big Mac's twin brother in the pool with Jennifer, at the same time another Big Mac was talking with Bash.
When Big Mack is talking to Bash at the pool he shrugs on his shirt and there is no drink in his hand, and then, in the next shot, there is.
Hanna says "Beauty is the Helen of Troy launching a thousand ships." Helen is (was) the name of a person and does not require a definite article.