What is Fill-in Friend?
1.
A person who is a friend, only when your other friends are not present.
Also referred to as a "number two". Any social networking site has a Top Friends, and the number is your next best friend.
"Well, John isn't here, so I guess I'll have to talk to my fill-in friend."
"Amy had to go to the concert, so I guess it's just me and the number two."
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That bit of skin between your nutsack and your pipe. Or your fanny and your pipe or whatever.
Total waste of skin, usually wearing an ..
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to say you will do something or get somewhere fast or straight away.
"ill be there likity split"
See quick, fast, straight a..