Steven Tyler had a rough morning -- not only did he not know what show he was on, he also dropped an F-bomb on live television!
Tyler -- who is probably never awake at such an early hour -- performed with Aerosmith on the "Today" show this morning ... only he thought he was on a different program. Al Roker's reaction ... priceless.
Then, while Roker was giving a weather update, Tyler screamed in the background to the crowd, "Thanks for coming out, you crazy f**ks!"
And now you know why rock stars perform at night.
Drops F-Bomb on 'Today'
11/2/2012 7:30 AM PDT BY TMZ STAFF
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