Who knows what this is?

[ThisLadyHunts]

Where do the batteries go?

They’re inserted from the rear.

[PondPopper]

OP welcome back to the 9th grade.. Lol you really should have known better!!! Avoid asking any questions about anything REMOTELY close to that shape in the future..
There is obviously a few pros in the house on the subject though...

[SmTx]

This thread reminds us men seek to learn and that women don't know everything!!!

[ThisLadyHunts]

This thread reminds us men seek to learn and that women don't know everything!!!

Hah!

[Johnny Dangerr]

I have been in the auto parts industry for 50 years and do not have a clue what that is...

[BTLowry]

Whatever it is, it makes no sense.
Threads, washer and nut look brand new, other part looks like it has been around 20 years
From what I can see, there was nothing attached to it. Guess it could have been pressed in

Post up what it came off of and maybe someone can figure it out

[Bowhica]

Somebody…please…come up with a better answer as to what a dikfor is bolted to!

Homoerectus is its typical location, but some have been found on or about the region of the Homoechicas.

[PYBUCK]

It's a bed anchor. They are press fit into the frame, so they do not need any expansion cuts to hold them in place. When they rust they become loose, which is what yours did. You can probably find replacement parts on E bay motors.

[Big_gun]

almost looks like a carriage bolt rusted off... what model truck etc