It got its name from the song Mr. Bojangles:
"I knew a man Bojangles and he danced for you ..."
Check out the Bojangles on that guy!
One could also just start singing the song to alert their friends without necessarily pointing out or bringing attention to the fact you're checking out someone's package.
1. an ankle that is bojank; a bojank ankle
2. an ankle that is messed up; a messed up ankle
3. an ankle that is a worthless piece of shit that breaks all the time; a fucked up ankle