cap it all
Also, cap it all off. Finish or complete something, as in To cap it all off they served three kinds of dessert.
Surpass or outdo something, as in This last story of Henry's caps them all. Both usages employ cap in the sense of “topping” something. [First half of 1800s]
Words nearby cap it all
cap and bells,
cap and gown,
cap cloud,
cap gun,
cap in hand,
cap it all,
cap jib,
cap of maintenance,
cap pistol,
cap rock,
cap screw