I’ve seen Chinese words like “Ren” (means man) that have R. Yes, it was the Japanese that Lollapalooza was formulated as a challenge to (WWII).
During World War II, some United States soldiers in the Pacific theater used the word lollapalooza as a shibboleth to challenge unidentified persons, on the premise that Japanese people often pronounce the letter L as R or confuse Rs with Ls; the word is also an American colloquialism that even a foreign person fairly well-versed in American English would probably mispronounce or be unfamiliar with. In George Stimpson's A Book about a Thousand Things, the author notes that, in the war, Japanese spies would often approach checkpoints posing as American or Filipino military personnel. A shibboleth such as "lollapalooza" would be used by the sentry, who, if the first two syllables come back as rorra, would "open fire without waiting to hear the remainder".
I like those ROE.