Think about it. If Newton had just looked at the bloody apple and thought "Oooh food", generations of poor students wouldn't have had to go through the torture of learning about gravity. Including me.
Shahid Afridi bit the bloody ball. Now instead of ruining their brains with big text books, generations of physics students will go on youtube to watch the video and feel better about their small brains.
Microbiology students will write their theses on the number of bacteria, fungi and virus that now reside inside Afridi's mouth in a complex symbiotic relationship that may or may not give rise to a whole new class of microorganisms. Some of them flesh eating.
Most importantly, the next generation of Pakistanti cricket players will be inspired to come up with innovative ideas to tamper with the ball. Afridi merely took the brave fall of the first try. Others will learn from this and succeed. Maybe rub the ball against their stuble or sneez into it to give it shine.
So why make fun of the guy who bit into something red and round in clear sight of the whole world, to give us many happy hours? No, no, no. Mourn that Newton didn't do the same.