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1.
easily persuaded, or peer pressured into nefarious acts, commonly known as an 'Ari Craven'
(josh) Lets get on it before indoor cricket.
(Ari) I am not that keen
(Adam) Lets just do it anyway.
(Ari) ok I have a rubber arm
by Jaktheripper December 21, 2009
 
2.
The sensation you get when you work out your arms without giving them time to recover, typically 24 hours at least after a session on the bench press.
Man I've got rubber arms, I nearly died when I tried to bench today..
by Assy McGee 86 September 05, 2008