$誰よりも遠くに行ってもここから笑ってくれる =~ s/笑って/嗤って/;

Bareword found where operator expected at - line 1, near "$誰"
        (Missing operator before N?)
syntax error at - line 1, near "$誰"
Unrecognized character \x82 at - line 1.

参考：2001/03/02(金)22時58分12秒