Top Definition
A shit so large it makes your asshole bleed.
Ronald: Dude, Frank just took a BLH! Man, I bet his asshole hurts like hell.

Ted: +10 Respect Points for him. That's almost impossible to do.
by Teddy Bear3456 August 22, 2012
Means "Boiling Lava Hot", from the comedian Jim Gaffigan's stand up skit, Beyond the Pale. Describes something hot that could possibly scorch the taste buds.
"Can I get a BLH?"
by Ashley Jackson November 28, 2006

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