The action of masturbation while wearing a Rastafarian hat (preferably with dreadlocks) and smoking large sums of marijuana. Generally those who partake in this activity shout "yaman" at the moment of ejaculation.
Due to the near unanswerable question of "What is it called if you rape you're own clone? Rape or masturbation?" a new word has been invented to answer this question.
Resizing an image larger to fit on many pages. These are then printed out and placed side by side to recreate a large poster of the original image. Usually the image is also modified to be made up of small dots, similar to old comics.
"That poster is huge, it must have cost you hundreds."
"No, Wendy taught me about rasterbating, it only ended up costing like $10."
The Rasterbator is a web service which creates huge, rasterized images from any picture. The rasterized images can be printed and assembled into extremely cool looking posters up to 20 meters in size.
The origonaldefinition for rasterbator was completly wrong, so I stole the one off the official site... google... duh