Jackary is the ship name for two members of the Band Why Don't We. Jack Avery and Zach Herron have a special bond of friendship and are like brothers. The Limelights (their fans) came up with the name by combining their names together. Jack + Zachary = Jackary.
A jackhammer that's been fired up nearby so early that it rousts you out of bed.
Those construction workers started using a gosh-darn-diddly-arn jackasshammer next door that got my ass out of bed at 6:30 this morning -- and it's a Saturday for Christ sakes!!!
A series started b YouTube Channel JacksFilms, to answer questions in the most humorous and stupid way possibly. JackAsk has almost 100 episodes. This is very similair to a QNA, yet its mostly his fans asking him why he is gay (which hes not, or is he? dun dun dunnnn) or why he has a big forehead.