1. A toy that shoots balls.
2. When you unexpectedly get hit in the balls/testes.
3. When a person gives oral pleasure to your testicles.
1. I got a new ballblaster that shoots googolplex balls/second!
2. During my negotiations in Sparta, King Leonidas unexpectedly ballblasted me with his boot.
3. A hobo
at the bus station gave be an exquisite ballblaster for an old dimebag