As you might know words with the same pronunciation but different meaning (Homonym / 同音異義語) are very common in all languages.

The Japanese words "Shabu" and "Shabu shabu" are not exactly the same but their pronunciation do resemble each other (latter is basically repeated twice of the former).

Shabu is a slang term for the drug methamphetamine (Also known as "meth" "speed", or "cold ice" in English) in Japanese. Whereas Shabu shabu is a variant of hot pot dish in Japan.

Now that you know what Shabu and Shabu shabu mean, make sure you repeat "shabu" twice when you ask for a "Shabu shabu"

Find out more about shabu shabu.