Former U.S. President George H.W. Bush is known for several things -- some good, some ... not so good -- but recently, he's established a reputation as sock aficionado. Not just any socks, though: The more colorful, and the mouth outlandish they are, the more Bush 41 seems to like them.

For the introduction of the Houston Texans' cheerleading squad in April, he donned the stars and stripes, and for the dedication of his son President George W. Bush's library in May, he broke out a pink pair (with polka dots). So what did he choose for his 89th birthday on Wednesday?

Superman socks, of course. If you can't tell from the above photo, circulated by Bush's spokesman, they're these Superman Cape Crew Socks, complete with red trunks, yellow belt, S emblem and, yes, a cape.

If the former president is considering another comics theme for his 90th birthday,we'd like to cast an early vote for these novel Teenage Mutant Ninja Turtles Masked Crew Socks: