I melt in your mouth, not in your hand - This phrase is used when you're getting head and you're too

This phrase is used when you're getting head and you're too lazy to hold on to anything.

'I melt in your mouth, not in your hand', said after my girlfriend took my keys and used them to give me a head job.

'I melt in your mouth, not in your hand', said when I forgot my phone and got a head job instead.

'I melt in your mouth, not in your hand', said while getting head and my pants fell down.