It's cross to bear, bear in this case being used in the same sense it is in weight bearing, Greeks bearing gifts or even ball bearing. It refers back to the Biblical tale of Jesus carrying his cross to Golgotha.
Lookin' Out My Back Door. Lookin' Out My Back Door is a song recorded by the American band Creedence Clearwater Revival, also known as CCR. The song was written by the band's lead singer, guitarist, and songwriter, John Fogerty.
Those lines are sung by country music singer, Charlie Daniels. Sittin' on a bar stool actin' like a durn fool is the first line of Daniels' country song Drinkin' My Baby Goodbye. An almost identical lyric is found in another country music singer's song titled Honey, I Do, performed by Danni Leigh. Leigh's version goes like this: Just sittin' on a barstool actin' like a sad fool.