To show one’s item that you own that only others of a significant older age would also own. More specifically in a gaming, comic or pop culture memorabilia setting.
“I have that issue too!” “Would you stop Breening”
Get the Breeningmug. The one you almost had, the one who was loyal , the one that never let anyone’s doubts change his trajectory, charming, a ghost who exists in perfect timing only.
Get the mareshiomug. 
