A recent study looking at scholarly articles found that male authors love their own writing so much that when they need an expert to back up their opinions, they'll just quote themselves.

The study, cleverly titled, "Men set their own cites high: Gender and self-citation across fields and over time," found that a shocking 10% of all scholarly citations were done by authors citing their own work. Less shockingly, the majority of authors doing this are men.

Sources: h/t Washington Post