besterday

The previous business day, exluding weekends, holidays, and vacation days.

Boss: Did you send me those reports?
Employee: Check the bottom of you mail folder, I sent them besterday!?!

by Alberto Weinsenstein December 23, 2010

Besterday

The day before yesterday

I think I got concussed besterday

by Ulla Inga April 14, 2015