Alex Jackson Share definition Flag Slang for a 17 year old lad who goes for 14 year olds, that'll grow up to be a 25 year old going for 14 year olds "Yo bro you hear about the guy that pulled the Alex Jackson" "ye man that's fairly fucked" Alex Jackson by Headhunter9865 August 10, 2020 0 0 Get merch Get the Alex Jackson mug. Buy Now — $32.95 See more merch