I am pretty sure Origi is raging mad at Firmino.
Firmino shot a good one earlier but missed it, Origi was offisde but was mad he didn't get the pass.
After that Origi got the ball and could've made a great pass to Firmino who was free, but chose to go back the play on purpose just so he wouldn't pass it to him.
Now Firmino wasted a terrible shot and Origi just stared at him.
TBH they're both shit but Firmino is slightly less shit, Origi should be mad at himself.
Seriously, just watch the interactions between the 2 of them, shit's hilarious.