But, if history is any guide, Eagles fans might have the last laugh.
Ahead of Sunday's NFC title game against the Eagles, a cut-up, bright red 49ers shirt was seen on the iconic Rocky Balboa statue that sits at the bottom of the steps in front of the Philadelphia Museum of Art.
The thing is, someone pulled the same stunt when the Eagles hosted the NFC championship game in 2018... and it didn't end well for the vandals.
Mere hours after the Rocky statue was adorned with purple and gold, the Birds clobbered the Minnesota Vikings 38-7.
So... thanks?