A BrainFart is where you are talking and suddenly forget what you were talking about, and realise you started rambling about something else.
A: so i really want to eat pancakes B: ok cool.
*few hours later*
B: what did you want again?
A: pancake? im pretty sure i said that a while ago because i was hungry so i wanted a... what did i want?..
B: did you just have a BrainFart?
A post showing up on a social media page or group that is totally off topic, irrelevant or incoherent. It takes an average time of thirty seconds to click the link and read enough of it to realize it is a total waste of one's time. For example, on a group with 7,000 members, that one post has collectively stolen an hour of life from those people.
I just clicked on that post on the embroidery group and had to watch a brainfart post of a stupid video of a puppy puking up a sock! Did that guy really think the world ofembroidery would be made better with that video??!!
When you mean to do something really obvious but then you forget what you were doing and end up doing something something completely different. i.e, when you have a wrapper in one hand and food in the other, and throw away the food and try to eat the wrapper.
Brain Fart:
Person 1: Man, I had such a brain fart today.
Person 2: What did you do?
Person 1: I was holding food and a wrapper and threw away the food and tried to eat the wrapper.