drop like a hot potato
drop (someone or something) like a hot potato
To abandon someone or something suddenly and completely, sometimes to avoid potential problems. I haven't seen Cynthia in weeks because she dropped me like a hot potato once she started hanging out with the cool kids. We dropped our renovation plans like a hot potato after finding out how much the job would cost.
drop someone or something like a hot potato
Fig. to disassociate oneself with someone or something instantly. When we learned of the conviction, we dropped him like a hot potato. I dropped the idea like a hot potato when the big boss said he didn't like it.
drop like a hot potato, to
To abandon as quickly as possible; to ditch. The simile is based on the fact that potatoes, which hold a fair amount of water, retain heat very well, as anyone who has so burned his or her fingers will testify. The figurative hot potato is likely to be an embarrassing subject or ticklish problem. The term originated as a colloquialism in the early nineteenth century. It probably was a cliché by the time W. Somerset Maugham wrote, “She dropped him, but not like a hot brick or a hot potato,” meaning that she let him down gently (Cakes and Ale, 1930).