FEARS FOR SPEARS

Living in squalor in dog-dung den

- 

Britney sings off-key while twirling around and flipping her hair repeatedly in a wild video she shared on Instagram

TRAINWRECK Britney Spears appears to be going off the rails again after posting two bizarre videos of her singing off-key amid a shambolic household piled with clutter — and what looks like dog poop on the floor!

"Messing around with lighting and cleaning my house like no tomorrow," she captioned an Instagram post, followed by half a dozen emojis of shocked and laughing expressions.

In the clips, the 43-year-old Toxic talent dons barely there PJs, black knee-high boots and a British accent while twirling and attempting to get a riff right.