was Seltsames

something strange

→ etwas
phrase Rare #47,886
something strange Here, was is an informal shortening of etwas. Seltsames is capitalized because it is used as a noun.
GE: Ich habe heute was Seltsames gesehen.
EN: I saw something strange today.

Hast du was Seltsames geträumt?

Did you have a strange dream?

— Der Junge und der Reiher (2023)

Aber er hat was Seltsames gesagt.

But he said something strange.

— Weathering with You - Das Mädchen, das die Sonne berührte (2019)

Träume sind doch wirklich was Seltsames.

Dreams really are something strange.

— Asterix & Obelix - Mission Kleopatra (2002)

Toast ist was Seltsames.

Toast is kind of a strange thing.

— The Big Sick (2017)