MILWAUKEE -- A Milwaukee father and son said they thought it was a joke when two men with guns entered their home on Friday night.

But once guns were at their heads, they fought back, reported WISN-TV.

Police said two armed men walked up the stairs, knocked on the door and planned to rob the home of Alfredo Hernandez and his son.

"I saw the pistol ... to my son's head," Hernandez said. "If they were going to shoot anybody, they were going to shoot me."

While one of the men attempted to make off with his son's recording equipment, Hernandez said he wrestled the other man to get the gun away from his son's head.

Hernandez's son also didn't give into the robbery.

"He clenched onto my arm and I just kept punching him till finally I ripped my arm out," said the son, who didn't want his name publicized. "Then we got him down, then I kicked him a couple times."

The man who nabbed the valuables was able to get away, while Hernandez sat on the other robber, trapping him.

By the time police arrived on the scene, Hernandez told WISN-TV, they had injured the man so badly that an ambulance had to come to the home.

Hernandez said he stabbed the man three times in the leg with a cheese knife and his son hit the man in the head with a snow shovel, which authorities took for evidence.

According to Hernandez, the man was screaming for help, begging not be arrested by police.

Hernandez also said the crooks pointed the loaded guns at his daughter and his 3-year-old granddaughter.

With his family in peril, Hernandez said he did what he had to do.

"Oh yeah, I messed him up," Hernandez said. "He came in walking and left in a stretcher."

Hernandez said his favorite movie is "Scarface."