Definitions by dbmag9
fhack
Contraction of 'Facebook hack'. When someone is on your Facebook account and pretends to be you for comic effect. Sounds a bit luck 'fuck' which makes it funny.
TDO
Tactical Day Off: when somebody takes a day off school/college in order to catch up on work, or avoid a deadline. Not to be confused with bunking, which is done simply for amusement/lack of motivation.