GR translation: but expect to be taken seriously

[Mike Jing]

V661.38-40, P675.1-3   “Flirt if you want,” Enzian now just as smooth as
that Cary Grant, “but expect to be taken seriously.” Oh, ho. Here’s whatcha
came for, folks.

The published translation interpreted this sentence as "but be prepared,
people may take your flirtations seriously", which doesn't seem right to
me. What exactly is Enzian saying here?