Chargin' lazerz is only funny because of the pictures. But I would say "shoop da whoop," "bix nood," or "OH LAWD IS DAT SUM CHIKENZ?" in reference to black people. And yeah, become an hero is too opaque. But I'd definitely say things like "kill yourself lol." Except, without the lol, usually.
How do you say lol? l-o-l? An actual laugh? I read it like loli minus the i.