Answer by taking a quote from the following article:

Born in Dallas, Texas, into a family of Mexican ancestry, Trevino was raised by his mother, Juanita Trevino, and his grandfather, Joe Trevino, a gravedigger. Trevino never knew his father, Joseph Trevino, who left when his son was small. Trevino's childhood consisted of attending school occasionally and working to earn money for the family. At age 5, he started working in the cotton fields.

Throughout his career, Trevino was seen as approachable and humorous, and was frequently quoted by the press. Late in his career, he remarked, "I played the tour in 1967 and told jokes and nobody laughed. Then I won the Open the next year, told the same jokes, and everybody laughed like hell."  At the beginning of Trevino's 1971 U.S. Open playoff against Jack Nicklaus, he threw a rubber snake that his daughter had put in his bag as a joke, at Nicklaus, who later admitted that he asked Trevino to throw it to him so he could see it. Trevino grabbed the rubbery object and playfully tossed it at Nicklaus, getting a scream from a nearby woman and a hearty laugh from Nicklaus. Trevino shot a 68 to defeat Nicklaus by three strokes.  During one tournament, Tony Jacklin, paired with Trevino, said: "Lee, I don't want to talk today." Trevino retorted: "I don't want you to talk. I just want you to listen."  After he was struck by lightning at the 1975 Western Open, Trevino was asked by a reporter what he would do if he were out on the course and it began to storm again. Trevino answered he would take out his 1 iron and point it to the sky, "because not even God can hit the 1-iron." Trevino said later in an interview with David Feherty that he must have tempted God the week before by staying outside during a lightning delay to entertain the crowds, saying "I deserved to get hit...God can hit a 1-iron."  Trevino said: "I've been hit by lightning and been in the Marine Corps for four years. I've traveled the world and been about everywhere you can imagine. There's not anything I'm scared of except my wife."

Did people find this funny?
Trevino grabbed the rubbery object and playfully tossed it at Nicklaus, getting a scream from a nearby woman and a hearty laugh from Nicklaus.