floppy-flappies

Not to be confused wif "flip-flops" --- i.e., sandals dat just have a sole and strap/pocket for yer toes --- this term refers to a pair of almost-totally-worn-out-and-loose-fitting shoes dat you lounge around in while you're just in da house or yard.

Cool chick, showing up on a favorite male friend's porch: Hey, Dude; I'm feeling a little bored and lonesome --- could you go for a stroll wif me down to da lake and back?
Hot hunk: Sure thing, Sweet Cheex --- just lemme change outta my floppy-flappies here, and I'll be right wif ya!