Maybe if she special enough, I'll glass case her

from The-Dream (Ft. Cocaine 80's, Mase & Pusha T) – Higher Lyrics on Rap Genius

Meaning

Once Pusha finds the perfect girl, he will put her in a display case as a trophy wife, just to show off. If his women is special enough to him, he will separate her from them. Pusha will also spend money on her, buying her things from out of the glass case, like jewelry.

The shoe references also do not end. When you have a fresh, dope pair of Jordans, you save them. Instead of wearing them, you “glass case” them in deadstock condition, preserving the fresh-off-the-line quality of a new shoe.

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