Ehud in Wikipedia
            Ehud ben‑Gera (Hebrew: אֵהוּד בֶּן‑גֵּרָא, Standard Ehud ben‑Gera 
Tiberian ʾĒhûḏ ben‑Gērāʾ; in the Biblical Book of Judges 
(3:12–4:1) was the judge who fought against the Moabite 
coalition, led by King Eglon. Ehud was sent to present the 
Israelite's annual tribute. He had blacksmiths make a short 
double-edged sword about twelve inches long: useful for a 
stabbing thrust. He hid the sword on his inner right thigh. 
Being left-handed, he could conceal the sword where it was not 
expected.
Ehud told Eglon he had a secret thing or word for him. Eglon 
dismissed his attendants and allowed Ehud to meet him in 
private. Ehud said, "I have a word/thing from God for you", 
drew his sword, and stabbed the king. Eglon was eviscerated by 
the blow, which punctured his intestines: "and the dirt came 
out." ("Dirt" here euphemistically refers to excrement; NOAB, 
Judges 3:21–22, footnote.) Eglon was so overweight that the 
sword disappeared into the wound and Ehud left it there...
                          
 Read More about Ehud in Wikipedia