Referring to ones own past or future intent to "rage"rage. Often referring not just to partying generally but specifically to how much alcohol you have consumed or will consume in the near future. Implicit in this boasting is that raging increases ones status as a sweet dude sweet dude. Rage call is a subcategory of a self call (self call).
frat boy 1: I played like 5 games of pong before noon on Green Key Weekend.
fb 2: Rage Call.
girl 1: I'm so hungover from the 7 shots I took last night.
girl 2: rage call.