A person who is too afraid to do something cool.
What, you didn't ask those twins out? You are such a Barry...
A dude with no balls who's too afraid to do something cool.
Nah, he didn't ask me out. He is such a Barry.
Someone who is too afraid to do something cool and always plays it safe.
She didn't show up for the knife fight. What a Barry!
a creepy old man who finds out about you online and then stalks you forever
mum: who you talking to?
daughter: this really nice girl
mum: just be careful it could be Barry, just be careful don't give them any personal information