Someone on your flist keeps making huge posts with pictures and/or tl;dr walls of text with NO lj-cuts, ever. You:
Just fucking defriend. It's their journal, and if you don't like it that much, you will stop reading.
Ask them politely (and repeatedly) to put a cut around anything that's going to cause a 2-page scroll at 1024x768.
Adblock their entire domain/Photobucket and try your best to ignore their tl;dr wall of text uncut posts (or use a browser addon to collapse them if one exists for your system config/layout).
Seethe, but do nothing.
ETA: FORGOT TO ADD A LOLCAT BUT OMG LOOK AT THIS BULL MASTIFF PUPPY ♥_♥.