Halloween Coolest Pumpkin 2020 Shirt
The joke is that the school would type each kid's name into their computer system database for record keeping and the person named their kid a snippet of SQL code that would delete data if thr school types it into their system. The rest of his name after "robert" deletes a table called Students in a database, so the joke is his name was entered into the school's database but then deleted the Students table (because of the code after Robert) thus losing the student records for the year. Sanitizing your input means you should only allow input into your database that won't change or break anything, essentially.
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