When the babysitter rings Jeff, he calls him her little Fuzzy Lumpkins, as in Fuzzy Lumpkins from The Powerpuff Girls.
Dexter: Dee Dee! Get off the phone!
Dee Dee: Okay. But I'm still looking for whatever I was supposed to look for!
Dee Dee: Hey, Dexter, is this what I'm looking for?
Dexter: No! Now go away. I'm hatching an evil scheme. Now... Where was I? Oh, yes. (starts laughing madly) Hahahahaha!
Dee Dee: Okay, Dexter, I'll let you open the door for... your GIRLFRIEND!
Dexter: I don't know what you are talking about... but... as long as I'm here... I might as well... (talks to himself) Okay, Dexter... think cool...
Dexter: (using voice changer to sound like the babysitter's boyfriend, to babysitter on phone) I guess we got cut off, but I wanted to call you back and say that you have got cooties and I am in love with... my football.
The teenage Dexter in ths epsiode would later appear in Dexter's Lab: Ego Trip, but without acne.
The Hydroplasmatic Accelerator is also seen (and named) in "Old Man Dexter."
"Carpe diem" is Latin for "seize the day."
This is one of the few occasions where Mom doesn't wear gloves.
The family dog is different from the one Dexter offed in "Jurassic Pooch." He seems to remain the same in all subsequent episodes.
Dexter: Blind her with science.
This is taken from "She Blinded Me with Science," a 1980's pop song by Thomas Dolby and also in some ways, "Blinded by Science" -- a 1979 Foreigner song.
Dexter: Reach out and touch someone.
The motto of AT&T, one of America's biggest telephone companies.