Have you seen flies mating before? Not for me, but here is some pictures. Flies are unlike humans, they doesn’t have sex for pleasure or enjoyment. The male and female of the same species have matching sex organs that fit together, just like a lock and key. This is said to prevent insects of different species from mating. Three more images after the jump. They looks funny while mating.

Sources: Across-the-board | Mark | Yahoo! Answers | warwick

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