Funny Baseball Grandma Grandpa Tee Design

1080x1080 square format t-shirt design prompt, #D3D3D3 background, vector format, solid colors only, built-in negative space, full graphic centered and fully contained with no cropping: create a funny baseball grandma or grandpa typography design for [funny, baseball, old man or old woman], using a chalkboard-style sports bar sign layout in solid charcoal and off-white ink, with one massive top line in condensed slab serif, secondary baseball-code subtitle below, a long horizontal rule, then stacked punchline rows in mixed serif and block fonts; add small minimal baseball stitches, tiny whistle marks, and simple underline separators only where needed, keeping the design mostly typography-driven, distressed, high-contrast, easy to read from a distance, and arranged like a bestselling aging-athlete joke tee.