The Five Rules 

Five subjects that no human should show arousal towards or try any sexual acts with. Once you break one rule, you break them all. These are;
1. Animals
2. Men (presuming you're male)
3. Family
4. Children
5. Dead People

Sean: Tom's getting off a 14 year old again.
Matthew: Lock up your cat, he'll be going for that next!
Sean: What do you mean?
Matthew: 'The Five Rules', once you break one rule you break them all...

The Five Rules by HCC137 December 27, 2011

five seconds rule of the public toilet 

A rule apply for taking a shat in public toilet, stating that after you saw someone exited a public toilet, you can't enter and seat within 5 seconds, otherwise you will still feel the creepy warmth as if you are placing your ass upon another unidentified, disgusting ass that just pooped

Pete: Oh man I was about to shit my pants so I ignored the five seconds rule of the public toilet
Pete's boyfriend: We are not going to do anal for 5 months because of that

five seconds rule of the public toilet by cinamon_muff August 12, 2016