SomeBody

A linguistically-adopted MetaSyntacticVariable? representing a person of unknown or unspecified identity.

It can be used in a sarcastic sense when the person is implicitly (or sometimes explicitly) specified, as in "Looks like SomeBody has a case of the Mondays" [OfficeSpace].

Alternatively, a person of importance.

---

"Some Body" is also the title of a BubbleGumCrash? image song (by Yuiko Tusbokura?).