get behind that 

Do someone from behind.

I could get behind that all night long.

get behind that by GetBehindThat May 2, 2012

I can't get behind that 

Expresses refusal to support, condone, or participate in a certain activity or idea due to subject's lameness, stupidity, or conflict with personal beliefs.

William Shatner: What about those men who say 'do as I do and believe in what I say for your own good, or I'll kill you'? I can't get behind that!

I can't get behind that by Alisa September 30, 2005

Can Get Behind That

Where you physically get behind the person. Not the Metaphor.

"Skirvy, I can get behind that." - Joe

Can Get Behind That by Skirvy July 30, 2018