pissing like a race horse basically means to piss in large amounts frequently, just like a pregnant lady would.
I have been drinking so much water lately and now I keep âpissing like a race horseâ every 15 minutes.
Just like porch monkey, jungle bunny or even spook mud man means BLACK PERSON!
Dan- "look right there Johnny I see me a black man bout 30 yards out"
Johnny- "Well ill be dammed", "HEY MUDMAN GET THE HELL OUT OF MY SIGHT BEFORE I SMACK YOU SILLY BOY!"
mud man