1 definition by SS_Derp
1. Latin meaning "One Year" and the name of a channel created by Mark E. Fishbach (Markiplier) and Ethan Nestor "CrankGameplays" that will be deleted after one year of its first upload.
2. A channel. An excuse for Mark to display his masochism
2. A channel. An excuse for Mark to display his masochism
Subscribe to "Unus Annus". Memento Mori
by SS_Derp May 11, 2020