OVERHIGH= BOOM

In the dark and gloomy night,I heard a sound that brightened the dark sky. What was i doing? I was listening to a friend's advice to on my speaker sound while playing the favourable MapleStory, because she said 'play maple dun on sound where got nice'. Yeah... REAL NICE!

Step 1 : I clicked the scroll in the item inventory.
Step 2 : I placed the scroll on my semi-godly equipment.
Step 3 : My dad called me.
Step 4 : I looked towards him.
Step 5 : I heard a 'fiew' sound (but i didnt know that the 'success' sound is very similar to the 'fail' sound)

And then i got very happy and overjoyed. I even said a 'YES!' in front of my dad. But then when i looked towards the screen, a question emerged 'Where is my item?' O.o'''