Guys, how to respond to the, "Hey. Been thinking of you," text from a fuckboy?

[Anonymous]

Okay, maybe he's not a fuckboy but he definitely got fuckboy traits. He pops up out of nowhere, sends me a text and shows interest then disappears for months (not exaggerating). Of course, I could always ignore his texts or respond politely but I'm tired of not defending myself. I feel disrespected and I want to call him out. The next time he pops up again, I want to prepare to fight back. I need to think of a very shaddy but classy way of saying, 'fuck you too'? All I could think of: Fuckboy - "Hey, been thinking of you." Me - "New phone. Who dis?" Just joking but I want to throw back shade. Something like, "I also think of myself," but worse. I'm terrible at this. I need a good comeback because I can't stand this fuckery. PS. Don't tell me to let this go and ignore it. I got the time and energy for this.

[Browneye57]

Ew boy, if you got time for this you must be really bored.
People going somewhere and being someone don't have time for 'fuckery' or 'dickery' Tell him to fuck off and quit bothering you. Find someone that really appreciates you and is worth your investment in time, effort, and emotion.

Why oh why do girls fall for this bullshit?
The true answer is because their own self value is so low they'll do anything for a little attention. [shrug]

[JamesMil]

tl;dr flirt with fuckboys then send them dickpics