Austin Mahone's "Rocko's Modern Life" t-shirt is throwing us into a nostalgia tizzy!

You can blather all you want about modern-day cartoons, but children of the '90s will get all kinds of nostalgic from Austin Mahone's "Rocko's Modern Life" t-shirt. Now we can't stop singing the "Rocko" theme song OR, of course, remembering other Nicktoon classics like "Doug," "Rugrats," "Ren & Stimpy," and "Aaahh!!! Real Monsters." Those characters were like our BFFs -- SOOO MANY MEMORIES! (WHAT?! There's nothing wrong with having cartoons as friends... right?)

The "Say Somethin" singer was photographed wearing his cartoon-covered shirt at the Tokyo airport, and while we're pretty impressed at how happy Austin looks trekking through an airport terminal (does anyone love airports that much!?), we're mostly just starting to feel a little old. Between Austin's shout out to the "Fresh Prince of Bel-Air" and this t-shirt throwback, we're having some mixed feelings about reliving those aforementioned '90s animated moments. Because AUSTIN WAS BARELY EVEN BORN WHEN THOSE SHOWS WERE ON. (FYI: If anyone starts describing Austin's latest '90s throwback as "vintage," we can no longer be friends.)

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