An expressive, beguiling phrase
used as a generic vocalisation of annoyance, or as as a
mild insult.
"I haven't enough port for my party this evening. Cock on a bicycle
stick."
"Cock on a bicycle
stick. I lost my monocle last summer."
"You, sir, are without doubt the biggest cock on a bicycle
stick I have ever had the misfortune of dining with."