..I'm 19 years old and I still can't tie my shoes properly xP
Most of the time I just stuff my shoe-laces inside the shoes, since I hate having to re-tie them every 5 steps, or then i just let them hang (I've never stumbled from that, I tend to stumble more when they're tied and get stuck on the small hooks on the side of the shoes (I wear hiking shoes almost year-round) x-x)
The real embarrassment is when random strangers tie them for me tho x-x So I've tied my "main-shoes" laces in some weird way that they can't be undone without scissors.. >-<
(Yes, there actually is some truth to it when I say I'm only 8 years old xP)