It's not always the toilet though.
I used to try to do the kitchen sink with the garbage disposal, until it got clogged and broken. Note that vomit was the only thing I remember putting in there, unless my cat was shitting in there during the day.
Another time when it wasn't the toilet was this time I was sick and shitting. it was really nasty, and I had to puke. Naturally, I couldn't get up and puke in the toilet because it was filled with shit, and if any spittle rubber-banded back into my mouth, I could have been eating my own shit. So I did the natural thing, and just puked into the bathtub right by the toilet. Byt he time I was done puking, the bathtub was like 1-2inches deep with chunky vomit. That took forever to clean out. I had to do it by fucking hand, too.
Another time when I didn't puke in the toilet was another time I was shitting, while drunk, and I just puked all over myself, fluid coming out of every hole in my body at the same time. That was the time I puked so hard I nearly passed out. I got really lightheaded.