Perhaps he should have warned them in advance that he was bringing a drow with him at least, but... Nah. This was pretty hysterical. Drizzt knows that it may get emotional for Zaknafein and Jarlaxle, but for the moment, he's enjoying himself immensely.

"We both know him," Drizzt replies to her reassuringly. "So you should hit him one more time for good measure. I'm sure he's done something to deserve it."

Unfortunately, because Jarlaxle has been acting quite familiar, Drizzt knows he'll be in no danger because of this suggestion; it's too bad for Jarlaxle that he showed that hand to Drizzt so soon! It also has the added benefit of letting his father's mind catch up with what's happening. Having a friend show up so suddenly would be surprising.