. Most writers know not to use mixed metaphors. Here are some examples:
1. She was a couch potato in the gravy boat of life, flopping dejectedly on the sofa.
2. All at once he was alone in this noisy hive with no place to roost.
3. The little boat gently drifted across the pond the way a bowling ball wouldn’t.
4. She grew on him like she was a colony of E. coli, and he was room-temperature Canadian beef.