When something is both tough and difficult. It implies that something is such a problem that it is both physically and mentally draining. However, it can be used in the humorous sense that something isn't tough or difficult but is tedious specifically for that person stating it.
Luke: "This year sucked man."
Adam: "Yeah man, having to move houses and being laid off. That's intense."
Luke: "Yup, it was pretty toughicult."
An absolutely foolproof way to keep minors from viewing content deemed "too mature" for them to watch.
Billy: "So I was trying to watch some videos for an M rated game, and I ran into an age gate, so I put in my real birthday. SOMEHOW it managed to figure out that I am 12. CURSE YOU AGE GATE!!!"
Bill: "Fucking age gate! *quick scroll* THERE! I was born on January 1, 1904. Fuck you age gate."