To hang on, awaiting more news on a subject.

On old dial-tuned AM radios before there were even preset buttons, it was a non-trivial task to tune into a particular station. So radio news announcers would tell their audience to stay tuned to the station if they were expecting more info on the current story."

See also: film at 11
Literally: "(crackle) explosions reported at Pearl Harbor naval base in (crackle) Hawaii...stayed tuned for more news..."

Modern: "Chad's about to tell Rachel he's been cheating on her. Stay tuned for the screaming."
by novanglus May 05, 2008
Get a stay tuned mug for your bunkmate Zora.
A phrase used by TikToker Daniel Larson at the end of his videos. His fans will often comment it under other people's videos to signify that he has liked one of their videos or talked about them.
Hello everyone, this is Daniel Larson. I will currently be going on tour with Grace Vanderwaal next year. And, we will possibly date. Stay tuned.
by levvelo August 25, 2021
Get a Stay Tuned mug for your girlfriend Larisa.