Crossword puzzle clue "i could go on and on"

Could be fine, could be graphic

"Jack Sprat could eat no fat / His wife could eat no ___"

Network that could've had "Firefly" and "Malcolm in the Middle" and did have "Love Boat: The Next Wave" and "Shasta McNasty"

"I Could Write ___" (Rodgers and Hart song)

Equally on-the-nose name they could've given Mia, the ballerina with an eating disorder on "Flesh and Bone"

Mountain range where you could find llamas and alpacas

What Chang and Eng could never be

WARNING: Improper use could lead to jealousy, treachery and/or war