OLL skip. PLL skips are kinda common, and I know full PLL. I forgot some OLL's when I was cubing off and on this spring, and even before I liked OLL skips more. And I can kind of spot it, because I watch yellows some times when I'm finishing up the F2L, so I'm like, can it be? [cue Marv Albert] YES! Let's do this PLL!
I like x-crossing, but not like 2nd or 3rd pair because I'm like holy f*ck what just happened! And it throws me off. Or I call it out sometimes, which is weird I know, but whatever.