If you execute this 
use strict;
use warnings;
one(1,2,3,4);
sub one{
    &two (shift, shift);
}
sub two
{
    print "Elements : \n @_ \n";
}

[download]
you would get 
Elements :
 1 2

[download]
Which means that it's same as passing the first two elements of the list the sub-routine one has received.Though I was not able to compile the code 
sub one{
    &two shift, shift;
}

[download]
which is your case.Provide the some context of your snippet that would help everyone to learn.

The world is so big for any individual to conquer

In reply to Re^2: Using 'Shift' in subroutine argument by narainhere
in thread Using 'Shift' in subroutine argument by Anonymous Monk

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