refering to something that was said in previous material and creating a new joke from  that old material is a "call back"

they're timeless, they never age

Dr. Marble delivered Cheney's "Call Back"

people are gonna know 6 days from now, six weeks from now, and six months from now

there is a shit stain on the presidency, and it is growing

expect heaps of scorn and abuse

as yea sow, shall yea reap

guess georgie never got that far in his "color along with Jesus" Bible