Talk (one's) arm(s) off verb phrase
Talk so much that the listener becomes exhausted or bored
She has talked my arms off about how great her vacation with her boyfriend was.
My boyfriend talks my arms off when it comes to politics.
You should cut off this part of the presentation so as not to talk the audience's arms off.
Although he is talking her arms off, he still can't convince her.
Used to describe someone who is good at persuading people to do or believe something
Primally used in the UK to indicate the typical manner of communication from the high social class
The verb "talk" must be conjugated according to its tense.
This phrase dates back to the 1900s, it alludes at the image of someone who is so bored with someone else's loquacity that their arms fall off.
Daughter: So I really want all my friends to have a great time. I was thinking it would be a good idea to have some candy out on the tables for people to snack on.
Mother: Well, if you want them to really enjoy themselves, candy is dandy but liquor is quicker.