Ice Age
Ice Age as a term can refer to a few things:
It can means a time when the world is covered in a constant winter, hence an Ice Age.
It can means a series of mediocre movies by Dreamworks about a bunch of prehistoric creatures going on adventures.
/Tg/ related it refers to a two player board game where you control a bunch of humans trying to kill all the mastodons, not for food but for good old extinction. Fun fun fun.