I'll put a ring on that
A way of saying you’re gonna take that thing and make it your wife, your future wife, or just someone who’s gonna be really mad at you later.
'I’ll put a ring on that 2 a. m. text you sent me.'
'I’ll put a ring on that fake tan you got last week.'
'I’ll put a ring on that 1000-song playlist you call a mixtape.'