Examples:

• We could argue about this till the cows come home without reaching a decision.
• I could talk about my cat till the cows come home, but you'd probably get bored.
• They've been working on that project till the cows come home.
• She could eat ice cream till the cows come home if she were allowed.
• We could watch this movie till the cows come home; it's so good.
• I could listen to this music till the cows come home; it's so relaxing.
• They've been driving till the cows come home to get to their vacation destination.
• I could read this book till the cows come home; it's so interesting.
• We could play this game till the cows come home; it's so fun.
• I could walk on the beach till the cows come home; it's so peaceful.
• We could dance till the cows come home; the music is amazing.
• I could watch the stars till the cows come home; it's so beautiful.
• They could explore the forest till the cows come home; it's so vast.
• We could swim in the ocean till the cows come home; it's so refreshing.
• I could paint pictures till the cows come home; it's so therapeutic.
• They could play with their toys till the cows come home; they're so happy.
• We could laugh till the cows come home; this joke is hilarious.
• I could dream till the cows come home; my imagination is endless.
• They could build sandcastles till the cows come home; it's so fun.
• We could sing songs till the cows come home; we love to sing.
• I could write stories till the cows come home; I love to write.
• They could play sports till the cows come home; they're so athletic.
• We could cook delicious food till the cows come home; we love to eat.
• I could learn new things till the cows come home; I love to learn.
• They could travel the world till the cows come home; they love to explore.