"On a Saturday Night" by Buddy Guy is an upbeat blues song about looking for love and having a good time on a Saturday night. The singer expresses his excitement and anticipation as he searches for his baby, hoping to spend the night with her. He plans to create a cozy atmosphere by kicking back the rugs, pulling down the shades, and enjoying a glass of wine or a big bottle of wine. The lyrics emphasize the singer's confidence that everything will work out fine when he finally finds his baby. He believes that being with her and experiencing her love is something he can never get enough of. The song encourages listeners to have a damn good time and make the most out of their Saturday nights. The singer also mentions locking up the front door and going out the back door, possibly implying a desire for privacy and intimacy with his partner. He insists that his baby's love is special and unmatched by any other, and he looks forward to spending quality time with her. Overall, "On a Saturday Night" is a festive and lively blues song that captures the anticipation, joy, and longing for love on a Saturday night, showcasing Buddy Guy's signature guitar playing and soulful vocals.