I'm a TF2 lover wtf
Saying "I'm sorry" can be a reference to ANYTHING
Ahem, observe a similar case
"What the-?" - TAWOG
"What's this sea creature?" - Octonauts
"Meow" - Sonic the Hedgehog
"KYS" - Plankton from Spongebob
(the "KYS" ain't targeted at anyone btw, just a song name)