This the big bang theory screencap might contain
signo, cartel, texto, pizarra, letrero, prendas de vestir exteriores, overclothes, prendas de abrigo, ropa de abrigo, and manchó.
Sheldon mentioning Penny in the series finale of "Young Sheldon" doesn't automatically imply Leonard's demise in The Big Bang Theory. Speculations about Leonard's death arose from a casual remark, but there are numerous plausible explanations.