Tough Sunday night for Kyle Juszczyk and his family -- after losing the NFC Championship game to the Rams, the Niners fullback's wife was trolled at a McDonald's.
Kristin Juszczyk had been trying to get some "comfort food" with some friends following the tough defeat ... when she walked up to the fast food joint and immediately began getting heckled.
Kristin explained they had to order on foot because their bus wouldn't fit in the drive-thru ... and then she showed video of an employee ribbin' them over her hubby's loss.