A common knowledge webcam rule stating that it's okay for straightguys to jerk off with each other on cam as long as it doesn't exceed 5 sessions. If it exceeds 5 sessions, then they are gay. Derived from the "5 second rule".
Hey bro we can only do this one more time and then its back to x-box. 5 sessionrule.
If you take a chick (if you're a guy)out on a date and it isn't going too well then take her back to your place. Then when she goes to the toilet strip down bollock naked and when she comes out, 2 out of 3 times you get laid.
Three guys go on a triple blind date
they each take their respective partners back to their flats and they meet up the next day.
1st guy: did you do the naked man rule?
2nd guy: Yeah . it worked BOOM
3rd guy: for me third guy unlucky
An aid for young straight males in order to define the age of a young looking peice of ass.
It is often done silently, accompanied by a knowing smirk, and a 'thumbs-up' by at least two people. It is now considered to be ok to go 'tap that ass'.
It'll hold up in court as well.
Jed: Look at that mate! she looks a bit young though....
Gaz: I'll TWO MAN RULE it.. (knowing smile, thumb up)