Maggybyte is a word found in many jokes and/or punchlines. Maggybyte plays on the word megabyte and is used to indicate one's obsession toward a certain person.
"Hey BB, how many maggybytes did you say your iPod can hold?" (Stated after being accused of obsession towards someone.)
"I think that girl that has been eyeing you has a jump drive full of maggybytes."