April 6th, 2010 
If Brett Favre returns for a 20th NFL season, you can call him “Grandpa” and not be making fun of his age.
Favre’s 21-year-old daughter Brittany gave birth to a son Tuesday, according to multiple media reports, making the 40-year-old Minnesota Vikings quarterback a grandfather.
Favre was 19 when he and girlfriend Deanna had Brittany in 1989. The couple was married in 1996 and had another child, Breleigh, in 1999.
Favre led the Vikings to the NFC championship game last season and has not yet decided whether or not he intends to return in 2010. He will turn 41 in October.
The Minnesota Spokesman-Recorder first reported that Favre was about to be a grandfather. ESPN said later it had confirmed the news through Favre.
