Poppy Seed Bun

Mickey’s mouth, filled with four mouthfuls
of a warm sweet poppy seed bun, popped open:
Up, Mrs. En(g)lish, is (th)e blo(ck) of (t)ime
allo(c)a(t)e(d) (t)o pun(ct)uation e(x)ercises.
Many a poppy seed fell, inadvertently!, on the classroom floor.
Mickey pointed to the delocalized fallen heroin(e) forerunner:
The. Time. Is. Up. Period!