Your typical weak, pathetic, little bitch Italian(referring to a male). A portmanteau of pussy and common Italian surnames, eg Albertelli, Campitelli, Donitelli, etc. Almost always, but necessarily, the aforementioned pussitelli will be a simpitelli as well.
Check out the old balding rat dago lifting in there in corner. He's here every night bro and never gets any bigger. No surprise dude, he's a total pussitelli!
Combination of the words pussy (see pussy) and size.
Describes a trainee who believe to be extremely strong because of his size but lift some really "pussy" (light) weight.