1.) verb: to disappear into nothingness when by all rights you should have seen them leave.
2.) expression: after someone disappears as above, you say it
1.) Where'd Larry go? He Batmanned on us. He totally pulled a Batman
2.) Where'd Larry go? Whoah... Batman
A derogatory term for a person/group of people who think they are 'all that', but are in fact not.
John's so fucking B-list!
Check out those B-list cunts.