if you mean the db curl it says 2005. the right bicep to me looks torn away from the top. my dad did that and it gave him this weird little bicep peak.
but I'm not disputing how long site injections have been around. I'm guessing that is why they are referred to as intramuscular injections , not glute injections.
I was just mimicking some of the newbies on here who would actually claim something like that

Seems having any bicep peak at all automatically warrants you as a suspect for synthol use these days , muscle tears can actually create a unique bicep shape that really stands out and to me looks desirable.
And it seems site injections weren't as obvious back then as we didn't see the weird disfigured delts as we do now..