simonm is correct about the subject matter of your poetry, but there are a few minor problems with compiling and running your code also.

You have an extra ")" in the line:

if ($nextDay eq 'TRUE' and $barGirl[$beerLevel]) ne 'hot') {
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after $beerLevel])
Removing it allows the code to compile but then it gives an error:

Label not found for "next DRINKBEER" at party.pl line 11.
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It looks to me that DRINKBEER: should have another set of "{}" in it like below:

DRINKBEER:
{
    if ($barGirl[$beerLevel] eq 'ugly') {
        $beerLevel++;
        next DRINKBEER;
    }
    else {
        sleep $withBarGirl;
        last DRINKBEER;
    }
}
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With those changes it runs and dies gracefully.

HTH
Daeve