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TIL Zam Zam Cola is the unofficial soft drink of the Hajj

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EoYW TIL the idea of a wolfpack being dominated by an aggressive “alpha” is misunderstood. Packs are family units, and the alphas are simply the parents of the other wolves.
N7LWb TIL that there is no established reason why men have beards. Possible explanations include beards increasing attractiveness to women (inter-sexual selection) or increasing dominance amongst other males (intra-sexual selection) by signalling sexual maturity and increasing perceived jaw size.
mxwKv TIL 'sounding' is a fetish where people insert thin rod-like objects up their urethra NSFW
ebQJ TIL that the American gangster John Dillinger escaped from jail with a wooden pistol. After whittling it in his cell, in March 1934 he used the fake weapon to intimidate 33 people before getting a real machine gun. “Ha, ha, ha! And I did all this with a wooden gun!” he bragged while leaving.
yZmp TIL there is a genetic mutation that causes your bones to become very dense. One person that suffered from this had a bone density that was eight times higher than the average male; he used to sink like a stone when he tried to swim and once came out of a car accident without a single fracture.