Just another question in a school book

Oh I thought the second one was glass... like glassblowing...

I dunno about blowing tacos man.

Then you haven’t eaten enough of them in one sitting.

When you blow gum, it shouldn't get hard

It goes in hard, then when you chew it, it becomes soft and you blow it to make a bubble. The riddle doesn't say it becomes hard after blowing. Also, I checked a few other sites, it's gum.

But it says "you blow me hard"... Do they mean the adverb and not the adjective?

Yup, it's blown hard, it doesn't become hard.

2) A sneeze? Shit that's basically backwards... what is the opposite of a sneeze?