A guy being either disloyal in some manner or cheating on their gf

or

wanting to have 2 girls at once but keeping It secret

Referenced in SAYGRACE’s tiktok famous song ‘Boys ain’t shit
Example 1
‘Talking like a gentleman, please! You just want cake with your ice cream!’

Example 2
‘He just wanted cake with his ice cream and I have more self respect than to stick around
by Ssmithyyyy June 3, 2020
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