holy mashed potato 

a fun word used to describe an outrageous or exciting moment:

"Dude i just completed the last level on cod!"
"holy mashed potato!"

holy mashed potato by xXx_cheekyscrublord_xXx March 29, 2015

Holy Moly Macaroni Ravioli Guacamole Chicken Nuggets Dipped In Mashed Potatoes 

When you're so surprised you ascend every other holy moly variation there is

Person 1: Dude I just got the rarest item in the game
Person 2: Holy Moly Macaroni Ravioli Guacamole Chicken Nuggets Dipped In Mashed Potatoes
Person 1: ew

Holy Moly Macaroni Ravioli Guacamole Chicken Nuggets Dipped In Mashed Potatoes by some urban dictionary user November 14, 2020