look up any word, like the eiffel tower:
 
1.
1.) To mention that your phrase is either "Off the top of your head" or that your pointing out the obvious.

2.) A reason to give when you can't or don't wish to explain yourself.

3.) Used after or before a possibly offensive phrase to make it seem less offensive.

4.) Used to make a sentence/statement less awkward.
1.) "I like monkeys...jusayin'."
2.) "The cake is a lie...jusayin'."
3.) "Your make-up makes it look like someone beat you with a dirty sock from a weasel's mouth...jusayin'."
4.) "That chick/guy is so outta your league...jusayin'."
5.) "Your really hot...jusayin'."