No condom rule 

At risk that this definition is gonna get a more dislikes than likes (as the other definition of this have) I'm just gonna give a definition:
Truth is, I can't.
I've never heard this term before... in my LIFE!
And I'm a horny bastard.
So I'm just gonna make something up that makes no sense whatsoever.

No condom rule:
When you pretend this is an actual rule you have, but secretly, you're out of condoms.

No condom rule.
GF: You got protection?
BF: Nah, babe. No condom rule.
GF: Since when did you have a "no condom rule".
BF: Since I ran out of condoms.
GF: You had 10 condoms, and we only slept together once.
BF: Yeah... that's another thing I need to say.
GF: Who is she?
BF: My right hand.

No condom rule by Mr Irrelevant September 24, 2016

No condom rule 

Having sex with a women and pulling out before you cum

"wanna no condom rule?"
"Yeah but be sure to pull out"

No condom rule by Homelessman52 September 23, 2016

No condom rule 

Fucking without a condom but making sure you pull out before you cum

"wanna do no condom rule?"

"sure but make sure you pull out."

No condom rule by Whatsinmyass September 23, 2016

no-condom rule

When you are fingering a girl and your hand comes back very wet without you having done almost nothing, you are allowed to have sex without a condom.

Damn bitch, you wet as fuck. The no-condom rule is officially in effect.

no-condom rule by jojokokoploplobeebee December 25, 2016