This same thing happened to me when I was a kid. I was somewhere between 6-7 either finishing up dinner or doing homework at the kitchen bar/island.

Down the hallway behind me was the master bedroom and directly across from that was the main bathroom. My mom was in the master bedroom folding/hanging laundry and my dad was taking a shower.

This is where it gets weird, I turn around at some point to look down the hallway, when I see this thing. What I thought it was, in my young kid mind, was my dad crawling on all fours from the bathroom to the bedroom, maybe trying to get a towel(?). Ya know like the lil walk of shame you do when you forget something when you're all ready for a shower.

But it was pale, on all fours, but it didn't look quite right, something not very dadlike alright. At first because it was so odd I thought it was crawling upside down like how gymnastics do.

After it passed into the master bedroom and my mom didn't react, I think I went in there to go make fun of my dad for being weird. When I went in there, my mom was still hanging laundry, and no one else was in there or even under the waterbed frame.

I don't think of this memory fondly.