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A development of the well-known phrase "hair of the dog", being on the dog originally referred to drinking large amounts, but can also be used to refer to being on the ball with things such as work and sport.
Hows the work going mate?
Yeah really well, I'm really on the dog at the moment.

Hows the training for that 10k race going?
Not so great, I've fallen off the dog a bit, I'll be back on the dog properly next week though.
by Blackers_4 May 11, 2011
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Jul 26 Word of the Day
Noun: a friend who is usually only called upon by a friend when a more primary/prominent friend is unavailable.

Taken from the term β€œsecond string” in an athletic competition situation. In football, if the star quarterback gets injured during a play, the second string is called off the bench to replace him/her. A β€œSecond String Friend” is essentially benched until needed, if ever.

Synonyms: Plan B, Second Choice, Secondary Friend, Benched Until Needed
I got a call from X the other night. She had an extra ticket to a concert she bought for a friend, but they couldn’t make it so she called me to ask if I wanted to go because I am her Second String Friend.
by Deus-ex-machina August 26, 2020
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