If a period is late then I will mark it with a question

from Wale (Ft. Daniel Merriweather) – The War Lyrics on Rap Genius

This is great word play. The period also means a woman’s period. If her period is late (meaning that she can be pregnant) then he will question it

If a period (.) is late then he will question (?) it. This also talks about grammar. A teacher would mark a period with a question if it is too late (run-on sentence)

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