Russell/APTitans backup quarterback Chris Simms, son of Giants Super Bowl hero Phil Simms, was busted Thursday morning for driving while under the influence of pot, police sources said.

The son of former New York Giants legend Phil Simms was busted in Manhattan Thursday morning for driving while on drugs, police sources told the Daily News. 

Chris Simms, a backup quarterback for the Tennessee Titans, was pulled over at a DWI checkpoint on W. Houston St. at 1:30 a.m., the sources said. 

One source said Simms, 29, was slurring his speech, his eyes appeared red and his face was flushed. 

He confessed to cops that he smoked a joint inside his 2009 Mercedes-Benz earlier in the night, a source said. 

"He was so stoned he couldn't keep his mouth shut, and admitted he smoked a joint in the car," said the source. "The smell of pot just came off his clothes and out of his car." 

Simms, who walked erratically when he stepped out of the luxury car, was charged with operating a motor vehicle while impaired by drugs, police sources confirmed. 

He is expected to be arraigned at Manhattan Criminal Court later Thursday. 

Simms signed with the Titans in April after being released by the Denver Broncos. He only played two games with Denver last season. 

A former third round pick by the Tampa Bay Buccaneers, Simms's career - and life - were in danger when he ruptured his spleen after a hit in a 2006 game. 

His father, who now works for CBS Sports, led the Giants to a victory in the 1987 Super Bowl and remains the franchise's all-time leading passer.