I am new here, so I am not sure, if this kind of thread was made before, but I will post it any way. These are funny.
When I was browsing through a Japanese OP fan site, I found a Encyclopedia with funny OP definitions. The site is here if you are interested:
http://puru-i.net/loguetown/4_fre/z_jiten.html (Japanese Only)
In this site OP fans made funny definitions, using character names, location names, terms in OP or anything related OP (such as voice actors in OP).
Here are few examples (translated from the site)
King Neferuta Kobura: A perverted King, who peaks at girls bathroom while his daughter was in there
Meat and Sake: Healing items for Luffy and Zoro.
Nami: Can beat almost all the male characters. She should be the second strongest character in OP (the first is Dr. Kureha). Make us wonder, why she could not defeat Arlong.
Ussop: He lies so such that his lies actually tell us the truth. He is not "a liar".
I am not really good at this, but make these creative and hilarious. And have fun with it!!