Maybe they were "thinking" very deeply into the coin flip. While a coin flip is supposed to be 50/50 there are many variables that decide the outcome. I would like to know who voted for 75% though.
"If the coin spins when it lands, the odds shift some more. Depending on the coin’s design, even a slight weight advantage on one side may increase the odds of heads or tails."
http://www.mentalfloss.com/blogs/archives/116382
"For example, a coin that is caught with someone's hand has a 51% chance of landing on the same side it was launched."
http://www.omg-facts.com/view/Facts/46110