British & Australian, very informal

to behave in a stupid or annoying way.

Stop playing silly buggers and come down off the roof. (often in continuous tenses)

• arty-farty
• a rubber check
• a rubber stamp
• a rude awakening
• a rule of thumb
• a rum do
• a running battle
• a running battle with
• a running battle with someone
• a running battle with something
• a rush of blood
• a rush of blood to the head
• a sacred cow
• a sad state of affairs
• a safe bet
• a safe pair of hands
• a safety net
• a safety valve
• as a general rule
• as all get-out
• as all get out
• as a matter of course
• as a matter of fact
• as American as apple pie
• hand to on a silver platter