Grind a poke (sack)

Oh bugger here's Rabbi Burns, only a couple of days late:

    Address to the Unco Guid or the Rigidly Righteous

    My Son, these maxims make a rule,
    An lump them ay thegither:
    The Rigid Righteous is a fool.
    The Rigid Wise anither;
    The cleanest corn that e'er was dight
    May hae some pyles o caff in;
    So ne'er a fellow-creature slight
    For random fits o daffin.

    O ye, wha are sae guid yoursel,
    Sae pious and sae holy,
    Ye've nought to do but mark and tell
    Your neebours' fauts and folly!
    Whose life is like a weel-gaun mill,
    Supplied wi store o water;
    The heapet happer's ebbing still.
    An still the clap plays clatter!

    Hear me, ye venerable core,
    As counsel for poor mortals
    That frequent pass douce Wisdom's door
    For glaikit Folly's portals:
    I for their thoughtless, careless sakes,
    Would here propone defences
    Their donsie tricks, their black mistakes,
    Their failings and mischances.

    Ye see your state wi theirs compared,
    And shudder at the niffer:
    But cast a moment's fair regard,
    What maks the mighty differ?
    Discount what scant occasion gave,
    That purity ye pride in;
    And (what's aft mair than a' the lave)
    Your better art o hidin.

    Think, when your castigated pulse
    Gies now and then a wallop,
    What ragings must his veins convulse,
    That still eternal gallop!
    Wi wind and tide fair i your tail
    Right on ye scud your sea-way;
    But in the teeth o baith to sail,
    It maks an unco lee-way.

    See Social Life and Glee sit down,
    All joyous and unthinking,
    Till, quite transmugrify'd, they're grown
    Debauchery and Drinking:
    O, would they stay to calculate
    Th' eternal consequences,
    Or your more dreaded hell to state -
    Damnation of expenses!

    Ye high, exalted, virtuous dames,
    Tied up in godly laces,
    Before ye gie poor Frailty names.
    Suppose a change o cases:
    A dear-lov'd lad. convenience snug,
    A treach'rous inclination -
    But, let me whisper i your lug,
    Ye're aiblins nae temptation.

    Then gently scan your brother man,
    Still gentler sister woman;
    Tho they may gang a kennin wrang,
    To step aside is human:
    One point must still be greatly dark,
    The moving Why they do It;
    And just as lamely can ye mark,
    How far perhaps they rue it.

    Who made the heart, 'tis He alone
    Decidedly can try us:
    He knows each chord, its various tone,
    Each spring, its various bias:
    Then at the balance let's be mute,
    We never can adjust it.
    What's done we partly may compute,
    But know not what's resisted.

    Meaning of unusual words:

    dight=sifted
    caff=chaff
    daffin=larking
    weel-gaun=well-going
    heapet=heaped, pile up
    happer=hopper
    clap=clapper of a mill
    core=crowd
    douce=sober, respectable
    glaikit=stupid
    propone=state in a court of law
    donsie=unfortunate
    niffer=barter,exchange
    lave=rest
    scud=sail quickly over
    unco=uncommon
    lug=ear
    aiblins=perhaps
    kennin=known