Rapid-fire accusations, complaints that are not meant to be answered in the course of a constructive conversation, but are meant to overwhelms an opponent and dilute any concerns about the person producing the grievances.
In my personal experience, this is likely to come from a Frustrated Family Member, especially one doing the nagging and yelling ( abuse ) - and the Dysfunction in Possessions ( or simply apparently excessive and/or unconventional possessions ) is an always-ready and near-infinite source of targets for accusations.
If you're starting to get issues raised that have nothing to do with the current issue, context or time frame ( "remember that time 5 years ago..." ) - you're dealing with this.
Instead of answering, aim to exit the conversation, and maybe even consider exiting the relationship, if this happens regularly.
The person doing this is not looking for a constructive dialogue to address issues, and this is unlikely to get better, but very likely to get worse.