"freebasing" is typically referring to the act of smoking drugs, such as cocaine or heroin, most likely in a purified/concentrated form known as freebase (an example would be crack form of cocaine)
Apparently it produces an intense high quickly, but the effects typically do not last very long.
She was so stoned that while freebasing she set herself on fire.
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.
Buy the mug