what are some of the most powerful, complex, one-liners?

f77coder has asked for the wisdom of the Perl Monks concerning the following question:

hello

in general if people could post some hellishly complicated one-liners, I'd like to have a go at trying to figure them out

no perl equivalent of fork bombs, thanks

:(){ :|:& };: or

bomb() { 
 bomb | bomb &
}; bomb
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