"Mostest" a term for proving to your boyfriend that you love him more than he does you. This a trump card in any "I love you more" arguments. Therefore, you always win.
Cerri: I love you
Ryder: I love you more
Cerri: I love you MOSTEST
Cerri: I win hah
Ryder: Damn, you got me, you win
Mostest is when you love your man more then most
Your man : “Hey baby I love you most”
You : “no baby I love you mostest”
A word with more power than most and allows you to win against a specific someone.
“I love you most!”
“Bitch, I love you mostest”
this is now a word or when you love your boyfriend the mostest and he says its not a real word
I love you
i love you too
i love you more
i love you the most
i love you the mostest