One's own excrement. Personal mud usually shows up in the toilet following a long night of drinking and eating drunk food (for example: white castles or taco bell).
“man.. I once made an adobe hut out of my own personal mud”…

Or.. “my neighbor was giving me a hard time about my loud music.. so I left him a mound of personal mud on his doorstep
by ShellAndy November 30, 2010
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Wow Johnny, I can't believe your life left you for a mud person, now they're gonna have a litter of half-black babies.
by TonyMalice September 6, 2007
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