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”
A hardo is a person who tries extremely hard at everything. Most times a hardo will try very hard at things that do not require excessive effort. For example, sports practices, gym class, etc.
Wow did you see Jack at practice today? What a hardo!