I Have A New Favorite Euphemism

And it is "various materials"

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from IMDb
Kravitz Sued Over Toilet Overflow

Rocker Lenny Kravitz is being sued for more than $300,000, after accusations he let his toilet overflow into a neighbor's apartment, causing "catastrophic water damage". The suit, filed in a New York City court, claims a commode in Kravitz's lavish Manhattan condominium "became blocked, clogged and congested with various materials" on August 1 and that his "negligence and carelessness" were solely to blame. The Amica Mutual Insurance Company is suing Kravitz to recover $333,850 it says it paid out to the Grammy-winning star's neighbor, a former insurance executive, for damage to his home. Kravitz's other neighbors in the trendy building in New York's SoHo district include rock star Courtney Love.
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Top 5 guesses as to what the "various materials" could have included are:

1) Lovely Silk Scarves
2) Poo
3) Hair
4) Drug/Booze Puke
5) A combination of 2, 3 and 4