Key members of two bands that each had a different song - both entitled "You Ain't Seen Nothing Yet" died on the same day: January 12, 2023.
PDJT uses a version of the phrase too.
1. LISA MARIE PRESLEY>died 1/12/23
…"You can think that I'm evil and I'm off the rails
You ain't seen nothin' yet
"I'm a bit transgressive and suppressive as well
Wellyou ain't seen nothin' yet
"Am I a disruption to your corruption?
You ain't seen nothin' yet
"You can think that I'm evil and I'm off the rails
You ain't seen nothin' yet
"If I don't get with your system then I'm sure to fail
You ain't seen nothin' yet
"No longer elated, now you're frustrated
You ain't seen nothin' yet" …
https://m.youtube.com/watch?v=Bpn9daBzjIs
>Some say she was addressing Church of Scientology, using its language.
2. Drummer Robbie Bachman from Bachman-Turner Overdrive or BTO>died 1/12/23
https://www.dailymail.co.uk/news/article-11633337/Robbie-Bachman-Bachman-Turner-Overdrive-dies-aged-69.html
"…Any love is good lovin', so I took what I could get.
Yes, I took what I could get.
And then she looked at me with big brown eyes
and said,
"You ain't seen nothin' yet.
B-b-baby,you just ain't seen nothin' yet
Here's some lovin' that you're never gonna forget, baby.
You know, you know, you knowyou just ain't seen n-n-n-nothin' yet.
You ain't seen nothin' yet"…
https://m.youtube.com/watch?v=4cia_v4vxfE
------–
President Trump
"President Trump released two statements today referring to the 2020 Election fraud and the Democrats doing everything they could to steal the election. "Hold on, you haven’t seen anything yet."
https://www.thegatewaypundit.com/2022/02/president-trump-releases-two-statements-ballot-harvesting-scam-will-go-biggest-political-scandal-history-hold-havent-seen-anything-yet/