If wishes were horses beggars wad ride, and a' the warld be drowned in pride.
If you be angry, claw your wame, an' cool i' the skin ye het in.
"Spoken to them whose anger we value not."—Kelly.
If you be angry, sit laigh and mease you.
If ye be na gall'd ye needna fling.
Synonymous with the English saying, "If the cap fits, wear it."
If ye dinna haud him he'll do't a'.
Spoken of lazy people, meaning, that if not restrained they will do too much. Applied tauntingly of course.
If ye dinna like what I gie ye, tak what ye brought wi' ye.