The Kansas fight song is a continual work in progress.

Old Big 8 version:
Talk about the Sooners, the Cowboys and the Buffs,
Talk about the Tiger and his tail,
Talk about the Wildcat, and those Cornhuskin' boys,
But I'm the bird to make 'em weep and wail.

Chorus:
'Cause I'm a Jay, Jay, Jay, Jay Jayhawk
Up at Lawrence on the Kaw
'Cause I'm a Jay, Jay, Jay, Jay Jayhawk
With a sis-boom, hip hoorah.
Got a bill that's big enough to twist the Tiger's tail,
Husk some corn and listen to the Cornhusker's wail,
'Cause I'm a Jay, Jay, Jay, Jay Jayhawk,
Riding on a Kansas gale.

Big 12 version, circa 2010: (date on KU website...after Nebraska and Colorado left Big 12, before Missouri and Texas A&M left)
Talk about the Sooners, Cowboys and the Bears,
Aggies and the Tiger and his tail.
Talk about the Wildcats, and the Cyclone boys,
But I’m the bird to make ‘em weep and wail.

Chorus:
’Cause I’m a Jay, Jay, Jay, Jay, Jayhawk,
Up at Lawrence on the Kaw
’Cause I’m a Jay, Jay, Jay, Jay, Jayhawk,
With a sis-boom, hip hoorah,
Got a bill that’s big enough
To twist a Tiger’s tail,
Rope some ‘Horns and listen
To the Red Raiders wail
’Cause I’m a Jay, Jay, Jay, Jay, Jayhawk,
Riding on a Kansas gale.

No new version exists with TCU and West Virginia.

http://www.fightmusic.com/lyrics/big12_kansas.html
https://www.ku.edu/about/traditions/songs/