Pressing a button on a ballpoint pen: Listen & Download Pressing a button on a ballpoint pen .mp3 Error! Change your browser, please! ⇓ Download Click on the calculator buttons ⚠ Stamp, Plastic seal ⚠ Scissors cutting paper ⚠ Put ballpoint pen on paper ⚠ Manual pencil sharpener ⚠ Pen writing ⚠ Ink Dipping, Pen Writing ⚠ Chalk writing on the blackboard ⚠ Put the cap on the marker ⚠ Ballpoint pen ⚠ Electric pencil sharpener ⚠ Tear off tape ⚠ ★★★★★