Tooting your own vuvuzela
Used in the same way as 'tooting your own horn', except in this instance it doesn't make you look good. Tooting your own vuvuzela results in making yourself look annoying.
1. She tried to toot her own horn about how much she reads, but ended up tooting her own vuvuzela when she revealed she was reading Twilight!
2. Don't be caught tooting your own vuvuzela lest you appear douche-y
2. Don't be caught tooting your own vuvuzela lest you appear douche-y