Bikers risk irritating leaders of taxi drivers' motoring organisation with old curiosities
I believe the answer is:
bric-a-brac
'old curiosities' is the definition.
(I've seen this before)
'bikers risk irritating leaders of taxi drivers' motoring organisation' is the wordplay.
'leaders of' indicates taking the first letters.
'taxi drivers'' becomes 'cab' (I can't justify this - if you can you should believe this answer much more).
'motoring organisation' becomes 'rac'.
The first letters of 'bikers risk irritating' is 'bri'.
'bri'+'cab'+'rac'='BRIC-A-BRAC'
'with' is the link.
Can you help me to learn more?
(Other definitions for bric-a-brac that I've seen before include "Miscellaneous objects of little value" , "Treasured odds and ends" , "Old curiosities" , "Motley collection" , "Knick-knacks" .)