For people downvoting the meme: it's just crude humour. I'll translate it:
--But did you know she's underage?
--You didn't know everything either
OP himself mentions "Attention, the picture contains fascist people." (Merdolini and Hitler.)
Nie na zdjęciu: Pedobear prowadził samochód. // not in the picture: Pedobear driving the car.