If they’re at all like cavies aka guinea pigs they are happy playing. The behavior is called popcorning in cavies.

Ok thanks for that! I think I may try out a firmer mattress sometime.

Can I ask why that mattress was especially good for sex? Like, more than a typical mattress? Asking cause I like sex and have FOMO.

Out of context "When I saw that WAP thing I thought “Why on earth someone will need this?” " Is like, yeah, no one is gonna want wet ass pussy.