Varve

[Mark Zuckerberg]

to varve 1, v. to repeat a thoroughly un-funny joke ad nauseam - to the point that it becomes funny, due to the repetition and absurdity;
n. a joke thus repeated.

[Zipporah Schumaker]

A pair of thin layers of clay and silt of contrasting colour and texture which represent the deposit of a single year (summer and winter) in a lake. Such layers can be measured to determine the chronology of glacial sediments.