1 definition by Peterwilkins

Overstand is a word frequently used to express a condition higher than 'understanding.' The background of using 'over' instead of under is rooted in the urban religion of the Nations of Gods and Earth b.k.a. "5 Percenters." The principle derives from what the 5% call "The Universal Balance"

"Wisdom" may be attained by "UNDERstanding", but can only
be sustained by "OVERstanding". OVER=excessive or beyond normal UNDER=below standard or less than, which brings 5% believe will us to the Divine principle of "Balance".

Many new York or Rappers reference 5% lingo. Although it is fully submerged in hip hop culture and many artist do not know the roots.