Slap you're enemy day means that- IF you have an enemy, you can either wait for them to say something rude so you can slap them, OR, just walk up to them and slap them. (March 1 cannot be defined, March 1 is literally a date, SORRY URBAN DICTIONARY)
Person 1: I love you
Person 2: I love you so much
Person 1: I love you most Person 2: I love you mostestestestestestest
Person 1: Hmmmmmm, I love you 1 Billion
Person 2: I love you 1 trillion
Person 1: I love you 1 Quadrillion
Person 2: I love you 1 Qunitillon
Person 1: I love you 1 sextillion
Person 2: What comes after sextillion? You win.