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."
See
Random Words:
1.
When everything that comes out of your mouth is just minging
Chad : You've got a dirty gash rash!
Brad : Dude, have you been taki..
1.
An exclamation declaring that one's nuts have indeed just been bobcatted.
Not to be confused with the phrase: "bobcat your n..