Someone who is mentally retarded. Used as an alternative to "tard monk" because it's more fun to say.
Oh Jeremy, you're such an ardy tardy
The art of not knowing what the fuck is going on
Wait what? - Kayla Ardi
The most delicious cum. Kia eats ardy’s cum and ardy eats kia’s cum after his shower
Ardy’s cum tastes like Pepsi cola