Is that true with the ice cream?
I don't see how a plastic bag is gonna change anything? I thought it was softer when you first get it because a.) grocery store freezers aren't as cold as at-home ones, and b.) cause that sh*t has been out of the freezer for like ten to thirty minutes depending on how long it took you to checkout and how far you live from the grocery store...
I always just set it out for a while or if I'm wanting some ice cream immediately I'll microwave the tub for like 30 seconds.
I'ma need some verification on that before I look like some miscreant who puts his ice cream tub in a ziplock.