"Press ups" refers to a type of exercise where you use your arms and chest muscles to lift your body up and down from the floor repeatedly. Full definition
Because these diapers are all natural and not treated with any chemicals, you can be sure that they are also super comfy when pressed up against your child's skin. (earlymomentsmatter.org)
To execute battle advance, hold down buttons a, c and press up on controller 1, and button b on controller 2. (gamerankings.com)
This has the same effect as pressing the Up arrow once to view the previous command and then pressing Enter. (howtogeek.com)