Iambic pentameter is a commonly used type of metrical line in traditional English poetry and verse drama. The term describes the rhythm that the words establish in that line, which is measured in small groups of syllables called  feet .
The printed expiration date on milk is really just a sell by date, and milk is usually still good for a few days after that. Milk should last up to 7 days past the sell-by date if properly... The printed expiration date on milk is really just a sell by date, and milk is usually still good for a few days after that.
You're not exactly looking at an expiration date in the sense that the milk is going to die on that day- it's more like a last day to sell by date. As a general rule, unopened items are safe for up to 7 days after the date printed on the package. If it's opened, though- you are on your own time and it's anybody's guess.