I remember him having big forearms in the specialist and demolition man
I can never understand how anyone can put "huge, big or large" in the same sentance describing Sly. It makes it very obvious you have never seen him in person. And I mean within inches sitting next to him, talking to him or even taking a piss next to him. Seeing him on camera or screen or from far away does not count. Here is a quote from when I worked with him on Over the Top by about 4 girls I was with.
"Where is Stallone" (within a few seconds a crowd comes in and they can now see Stallone)
Almost within unison- "oh my god he is so tiny"