A 21-year-old Japanese man was left speechless after learning that his innocent grandmother had mistaken his silicone sex toys for a pair of thermal socks.

The incident was documented in photos and videos via Twitter on July 5.

The user @analKABAO discovered the situation when his grandmother informed him that she had borrowed a pair of “socks” from his room.

To his horror, what she actually took were two of his “onaholes” — fake, silicon vaginas used for masturbation.

In a video, @analKABAO is seen walking up to a room as he makes the shocking discovery.

“Grandma, tell me it’s a lie,” he wrote.

To add insult to injury, the onaholes also got stuck on his grandmother’s feet.

@analKABAO was ultimately forced to tell his grandmother the truth so that he could remove them from her feet.

“At 21, I never thought I’d be taking away onaholes from my grandmother’s feet,” he said.

In a follow-up photo, he announced, however, that he would no longer use the toys, offering them to anyone interested.

“I don’t want to get caught in incest,” @analKABAO joked, adding that the toys were “still warm.”

It’s unclear how @analKABAO’s grandmother processed the life-changing information.

Twitter users, on the other hand, had mixed reactions:

“Well, it’s a real foot job.”

“I laughed so hard at this.”

“I don’t find this funny at all. I feel sorry for her.”

“She must have struggled putting them on without lubrication.”

“I have no idea about your family values, but this felt really intense.”

Featured Images via Twitter / @analKABAO