Something you say when someone of a female gender is annoying you or acting like a slut . You usually push, shove,slap, or punch the thot away afterwards.
After fucking some nasty whore, or a dirty skank, or any other time you looked down at your dick and say "what the fuck did you just do?" You, then in a panic, immediately go into the nearest bathroom and grab what appears to be the best solution and give your dick a bath in Listerine. Make sure to get it into your dick hole too.
Listerine on your dick= whore begone.
Jim: "man did you fuck that fat whore last night?"
Jack "omg ya! Then I immediately threw up, washed my cock with whore begone and got the fuck out of there"
jim "shit that whore begone burns my dickhole"
jack "better the whore begone burn than the sweet sting of syphillis"
A magical set of words only to be uttered in certain situations of life and death. Other such marvelous phrases include beatus meatus and fetus deletus. Remember this phrase to protect yourself.
As the circle of thots enclosed themselves on him, Harry yelled ferociously, "THOTUS BEGONESS!". An explosion rang out to be heard in all directions, but when the dust cleared Harry was the only one standing within a 2 mile radius.