That's typical for mathematicians - even more so with extroverted ones. They approach rules as a game one can use at will as long as the rules remain true. Thus

That's typical for mathematicians - even more so with extroverted ones. They approach rules as a game one can use at will as long as the rules remain true. Thus, playing pranks with rules can become enjoyable. Coincidentally, surprise is the quintessence of humour, some say. The original meaning of the word "hacker" is related to this thinking. However, the focus is different. The hackers tend to achieve their goal in whatever "hacky" way possible while mathematicians see the rules itself as the game.