Jeff can overthink anything, given a chance, and his firstborn's childhood give him lots of chances.

“Oh, come on. You know I’m half-Kryptonian. I can hear your heartbeat. I could smell you getting wet like a slut and making a mess of your boxers when you saw Tim’s cock.” “Watch your mouth, Lex-brat,” Jason growls dangerously. “I'm pretty sure I'm not the slut here.” Kon gives him the finger. “Come sit on my face and watch it yourself, coward.”