No means no.

"No" means no.
"Not now" means no.
"I'd rather be alone" means no.
"No thanks" means no.
"I have a boy/girlfriend" means no.
"Maybe later" means no.
"Let's just go to sleep" means no.
"Uhhh..." means no.
"It hurts" means no.
"Fuck you" means no. ("Fuck me" means yes)
"I'm not in the mood" means no.
"You're not my type" means no.
Silence means no.
Staying still means no.
"I really like you, but..." means no.
"You're/ I'm drunk" means no.
Not kissing back means no.
"I'm not sure" means no.
"You've/ I've been drinking" means no.
"Stop" means no.
"Don't touch me" means no.
"Fuck off" means no.

Gentlemen, please be guided accordingly. I'm so sick of guys who think that "no" means "yes" and "yes" means "harder".