G'N'R Drummer Reveals Rocker With The Biggest ...
Former Guns 'N Roses drummer Steven Adler just blew the lid off the rock star penis debate -- telling TMZ, Steven Tyler from Aerosmith has the biggest knee knocker he has ever seen ... period.
![](https://cdn.statically.io/img/imagez.tmz.com/image/2e/16by9/2011/12/17/2e117dcba2205392a689aea15c3f15e1_md.jpg)
Adler dropped the big news on his tour bus in L.A. -- telling us, "After seeing Steven Tyler's rig ... I'm lucky if I take my clothes off at all after that."
Guess it's true what they say about guys with big mouths ...