To "gee" someone up

Posted by Word Camel on January 30, 2002

As in John looks like he could use a little geeing up. or Why don't we go gee him up? Meaning to encourage and lift someone's spirits.

I have seen and heard this used in the UK but not in the US. It's not in my American dictionary. I'd like to know the origin of the phrase and particuarly the word itself.

Curiously,

Camel