Cherry smashes are defined as feeble kisses and a honey cooler is simply a kiss. Cherry smashes was slang from the 1920s and a honey cooler was slang from the 1930s. Any ideas why feeble kisses would be cherry smashes or why a honey cooler would be a kiss?
Because your gal's lips are red like cherries and her kisses are sweet as honey.
Just don't tell her you had to go to the internet to find this out.