Clicking on a profile thumbnail to reveal an uggo
Coworker writing in the lines allotted for your shift and leaving their own empty.
Worse: Them starting in the middle of their own line and rolling over into yours.
Instead of putting a zero in each box, they draw a line through all their boxes except it's not all their boxes as the line veered into your own lane
(24 hour facility, three shifts, three places to write, one for each shift)
Selecting text on smart phones without the use of arrow keys because arrow keys aren't available.
Slide texting not selecting the word you want.