C Programmer: Their ‘*’ and ‘;’ keys are worn out.
C++ Programmer: Their ‘>’ and ‘<’ keys are worn out.
Java Programmer: Their ‘p’, ‘u’, ‘b’, ‘l’, ‘i’, and ‘c’ keys are worn out.
Ruby Programmer: Their ‘e’, ‘n’ and ‘d’ keys are worn out.
Python Programmer: Their tab key is worn out.
PHP Programmer: The key mapped to ‘$’ is worn out.
Perl Programmer: Their punctuation keys (all of them) are worn out. And the letter keys are crisp and clean.
XML Programmer: Their ‘>’, ‘<’, and ‘/’ keys are worn out.
Windows programmer: The Ctrl, Alt and Delete keys are worn out.