look up any word, like pussy:
bestfriendship is something that you and your go to gal(s)/guy(s) and you can tell them anything. it is like somthing that you cannot do with just any friends...only your best friends{notice the word"bestfriendship}
OMG! Sam and Mallory have a very strong bestfriendship; they are like sisters!
by Samzyboo December 25, 2008
it's a word.
"Whatever, my bestfriendship isn't important to you. I don't care..."
by machpe June 11, 2009