Has to be the mission in VC where you have to race that dude so he can be in the bank heist with you. Its one of the worst and most annoying missions ever.
And the other has to be that espresso 2 go Mission in III where you need to destroy the colombian cartels coffee outlets in 8 minutes.
in SA, as a kid I was stuck in the mission where you had to work for OG Loc, and drive a car without smashing it. If you did, you needed to respray the whole f*cking car.. And there was a time like 5 minutes. I ended up smashing my controller.
in VCS I was stuck in that mission where you had to break some stuff in a warehouse wich was put in fire.
in LCS I dont remember being stuck in any missions, but yeah
in IV, it was that mission where you had to drive a helicopter around the city to follow another helicopter, and Little J had to shoot with a rocket launcher.
in GTA V, the most boring mission was Scouting the port, my god that mission sucked donkey ass balls. And Mr Phillips was also pretty hard, when you had to shoot the trailers with just a shotgun and a handgun... And we all know why it wasn't that easy, because the mission had some hard things for us TLAD fans to do.....