Derek: Yeah man you hooked up with that SDB hahaha!!!!, but dude how fucked up were you???
John: I obviously don't remember and i don't want to talk about it...
Means that someone is a sick disgusting fuck who thinks about sick disgusting things and likes to call random people paedophiles. A SDB will make a joke out of it and they think it's funny when the reality is there are REAL sick paedophiles out in the world. SDB's will get their ass kicked..
Gio: "Who?! Why?!"
Zander: "My math teacher Ms. Hester! This Bitch ask me the question, 'Zander where's your homework assignment from last night and the night before last?'. I respond, 'Ms. Hester, I didn't, the class didn't, you didn't assign homework over the last 2 nights ' 'Yes, yes I did. I am the teacher and you are the student! So again I ask, where is your homework before I fail you!' 'So you gonna fail me cause your ass didn't assign homework over the weekend end, that ain't right!' 'I'll see you in the principal's office today after school with your parents and homework or I'll have you suspended!' 'So you gonna suspended for being a SDB?' 'SDB?! What's that?' 'For a teacher your not very smart, you Stupid Dumb Bitch!' Class, 'Oooooooooh'. 'Get out of my classroom! To the President's office!!!' 'There you go again! It's the Principal's office SDB!!!' Class, 'hahahahahahahaha'