3 ms·

> and a rumble seat What?

• red-iron-pine 4y ago
  he dun got a big butt
• Arrath 4y ago
  Junk in the trunk
• theodric 4y ago
  When your butt's so big it fits two extra people https://en.m.wikipedia.org/wiki/Rumble_seat https://en.m.wikipedia.org/wiki/Rumble_seat
• karmelapple 4y ago
  It's a humorous phrase members of my family have used for, as others have mentioned, a larger posterior.