[Yes really. He likes smart people.

The imagine is indeed playing with his hormones like it's a roller-coaster. He can't really see how Dick would look from that angle, but his imagination is having fun with it.

When he reaches the tip with the tongue he tilts his head just so, to gently suck on it... still not letting it inside of his mouth, the boy was born to tease. He adores the fact that he can bring Dick to the point of cursing.]