A person who hovers around a group and contributes nothing to the conversation consistently. peoplewill try to slowly ease them away but if they do not take the hint this is when a tag along becomes a j dot/j.
It can be changed based off of the first letter of that person's name
John: Peter go away you're j dot
Peter: How am I a j dot
Everyone: you just are
A way of saying Toronto. Usually used by worthless canadian maple suckers who dream of one day having a city to be proud of. Also, T Dot is a term used strictly by rich, Canadian teenagers who wish they lived in an American ghetto. These teens are yet to discover that saying the first letter of Toronto and they pronouncing a period does not make you a gangsta.