Knock sb sideways/for six British Australia Verb + object/complement informal
To make someone feel very shocked, overwhelmed, upset or ill
What he said knocked me for six.
The decision my parents made really knocked me sideways.
The verb "knock" should be conjugated according to its tense.
1. Last actions before having no chance to do
2. The last notes belonging to a song
1. He got his last licks on the piano before selling it.
2. The last licks of this song left an indelible impression on me.