Funny pub's motto is something drinkers say (7,2)
I believe the answer is:
bottoms up
'something drinkers say' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.
'funny pub's motto' is the wordplay.
'funny' is an anagram indicator.
'pubs'+'motto'='pubsmotto'
'pubsmotto' anagrammed gives 'BOTTOMS UP'.
'is' is the link.
Can you help me to learn more?
(Other definitions for bottoms up that I've seen before include "Toast" , "down it goes!" , "Your good health!" , "Cheers!" , "Down the hatch!" .)