A wise woman once didn't give a single fuck about grammar, and invented the word "bestest". It is used to specify if something is the best, among other things.
Well, bestest is better than the best. Now you can go use it all over the nerd forums on the Internet and try to look cool.
Nerd1: 0MG LoLz I HaEV C00kies!1
Nerd2: YaY C00KIES!1!111111oneone
Guy trying to look like a cool nerd: YEZ COOKIES ARE TEH BESTEST EVAH LOLOLOLO
Nerd1: ...
Nerd1: Asshole.
WARNING: Dont overuse it or you will sound insincere and stupid.
1 (verb) The greatest, awesomest, best thing ever in the world ever! Despite sounding retarded, it is better than saying best.
2 (noun) Word used to describe your favourite person(or people) to have cybersex with. Cybersex is also called "talking" Mostly used in front of small children, parents, other unapproving people.
Also called a special friend. Not to be confused with a bestest friend. Ever.
1 They weren't just best friends, they were bestest friends.
2 (a converstion)
Person 1: "So, erm, my... bestest... and me, we were "talking" on msn for an hour."
Person 2: "Wow, whats their addy? I need to talk to them!"
Small kid/Parent/Unapproving Person: "Huh?"