Top definition
When you're using Facebook messenger and you accidentally hit the thumb on the right side of the screen. It sends it right away, so there's no going back. It's an oversized blue thumb that gets inserted into your thread of texts. Often happens when you're having conversations that would be totally inappropriate to give a thumbs up.
Two people messaging on FB:

Johnny: "I just got back from the vet. My dogs eye was bleeding from the inside."
Daphs: "(thumbs up)"
Daphs: "Shit, that was an accidental thumb. I'm sorry to hear about your dog."

thumbs up facebook inappropriate whoops oversized texting messaging FB
by InTheKitchenCookingActualPies September 09, 2016
Get the mug
Get a accidental thumb mug for your brother-in-law Jerry.
2
When you're using Facebook messenger and you accidentally hit the thumb on the right side of the screen. It sends it right away, so there's no going back. It's an oversized blue thumb that gets inserted into your thread of texts. Often happens when you're having conversations that would be totally inappropriate to give a thumbs up.
Two people messaging on FB:

Johnny: "I just got back from the vet. My dogs eye was bleeding from the inside."
Daphs: "(thumbs up)"
Daphs: "Shit, that was an accidental thumb. I'm sorry to hear about your dog."

thumbs up facebook inappropriate whoops oversized texting messaging FB
by InTheKitchenCookingActualPies September 09, 2016
Get the mug
Get a accidental thumb mug for your bunkmate Helena.
3
When you're using Facebook messenger and you accidentally hit the thumb on the right side of the screen. It sends it right away, so there's no going back. It's an oversized blue thumb that gets inserted into your thread of texts. Often happens when you're having conversations that would be totally inappropriate to give a thumbs up.
Two people messaging on FB:

Johnny: "I just got back from the vet. My dogs eye was bleeding from the inside."
Daphs: "(thumbs up)"
Daphs: "Shit, that was an accidental thumb. I'm sorry to hear about your dog."

thumbs up facebook inappropriate whoops oversized texting messaging FB
by InTheKitchenCookingActualPies September 09, 2016
Get the mug
Get a accidental thumb mug for your boyfriend Bob.