Directions damaging my ego

After spending the night on my sister-in-law’s air mattress, I thought I’d be a nice guy and deflate the thing.

After battling with the air pump to no avail,  I moved to the large, quick release valve and read the following directions:

How do you think I felt after not being able to push the tab in the direction indicated by the arrow on the valve with both hands?

What kind of company includes a sentence like, “This can easily be done with one hand”?

They had to know that this would eventually hurt someone’s feelings.