Tuck or untuck? This is the question

Every single man has wondered about this at least once in his life and asked his partner staring at the mirror: should I tuck my shirt in? You are free to make up your style to express yourself – that's an inalienable right – but there are three simple guidelines.

1. Shirts with a straight bottom hem can be worn tucked or untucked.
2. Tailor-made shirts and shirts with an asymmetric bottom hem must be tucked in!
3. With Hawaiian shirts , go untucked.