Howard (Simon Helberg) and Bernadette (Melissa Rauch) will be having a staycation at home, which Raj (Kunal Nayyar) and Stuart (Kevin Sussman) might be crashing. Meanwhile, Sheldon (Jim Parsons) and Amy (Mayim Bialik) will do the deed again in season 10.

Howie and Bernie planned on going on a vacation in Palm Springs to spend the last of their quality time as a couple before the baby arrives, but will end up having a staycation in their home instead. In an episode 5 spoiler of "The Big Bang Theory" season 10 — titled "The Hot Tub Contamination" — someone will be coming to their house, sending Howard and Bernadette into a panic.

According to iTechPost, that someone will be Raj and Stuart. Thinking that their friends are in Palm Springs, the two pals will sneak in to use Howard and Bernadette's hot tub. The couple will be stuck in their bedroom, watching Raj and Stuart share their hot tub. The couple will try to think of what to do next, especially when they don't want to ruin their staycation but at the same time, want Raj and Stuart out of their hot tub.

Meanwhile, Sheldon and Amy's planned sex might be coming up soon in season 10.

Previously in "The Big Bang Theory" season 10, Sheldon and Amy started living together as an experiment. Although the two are not getting along that well, the two will have their scheduled coitus soon.

In an interview with Glamour, executive producer Steve Molaro talked about Sheldon and Amy's intimate bed schedule.

"I think it's safe to say that there's a schedule and there's a quota. It's on my calendar, and I assume on the calendars of most good TV-watching Americans, but we'll see. I'm sure she would like it to be a little more often than once a year. Maybe that will come up as well."

"The Big Bang Theory" season 10 airs every Monday at 8 p.m. EDT on CBS.