March 13th is Sandwich Day! This commemorative day was established based on the 1 being sandwiched between the two 3s!

Well, I have nothing there! That'sI'm a why!boy なん can be both read as what (何) or male (男)

Personified Half-Phantom ←(Otokonoko)

The word "sandwich" originally did not mean to put something between. The word is nowadays used with the nuance of that. (Sandwich also happens to be a person's name)