I (20F) accidentally flushed my vibrator down the toilet in my moms (55F) house, and she’s noticed somethings wrong with the toilet, how can I explain what happened in the least humiliating way?

I feel like the title is pretty self explanatory, but I’ll tell the whole story. I’ve been home from university for a few weeks now and I’m living with my parents again. For some background, while I’m close with my mam and can talk to her about almost anything, we’re not open about sexual stuff. She’s not catholic about sexual topics, and she has asked me to talk to her about thing like that before (like if i needed her opinion, or advice), it’s just not something we’ve ever actually talked about so I’m not comfortable talking to her about it.

I’ve got this small bullet vibrator (like 2 inches long, takes 1 AAA battery, tiny thing) and 2 days ago it fell out of my pocket into the toilet, which I flushed before realising. It took me about 20 minutes to notice it was missing, I searched everywhere and couldnt find it, then I remembered I’d heard a clunk sort of noise earlier when I was using the bathroom and realised what had happened, but it was obviously too late. I even put rubber gloves on and had my arm halfway up the u bend but couldn’t feel anything. Oh, and it was definitely down there, and probably on, because the water was rippling at the surface from vibrations (took a video bc even whilst freaking out it was sort of hilariously awful). So, at this point I’m panicking, I call my boyfriend freaking out and explain everything, and we came to the conclusion that my best bet was to just flush it a couple of times, and pray.

The praying seemingly did not work because earlier tonight I overheard my parents talk about how the toilet is “still doing it”. I (already terrified) asked what was wrong. My mom said the stopcock in the toilet must be loose because the part where the water comes in after its flushed is just constantly trickling. I asked if this would be hard to fix or anything and they both assured me it’s not. So now my only issue is explaining it I suppose. Money isn’t a problem, I have a small amount of money saved up so I can pay them the repair costs

She said she’d call the plumber in a few days to get it looked at, but we always use the same guy so that’s extra humiliating, so even if I tell her the truth, he also has to know. Alternatively, my friend suggested I could slip the plumber a 20 and ask him not to mention what was down there? And while that sounds like a good idea it just feels like it could easily backfire, plus it still involves telling him.

I already sort of started preparing to tell her when it first happened, because my first instict was to be honest, but I was stupid and thought there was a chance it would fix itself. And to be fair I was freaking out a lot. Like I was watching videos on how toilet cisterns work whilst having a panic attack, trying to calm myself down by logically showing myself that a foreign object down the toilet can’t completely destroy it. My first issue is that I’m going to have to beg her not to tell anyone, my dad included, about this. She’s the sort of person who loves to tell other people’s embarassing stories to friends/family, or just straight up tease you about something you explicitly ask her not to tease about. So, thats one reason to try the bribery method.

So, should I come clean or bribe a plumber? And if I should tell her, any advice on how to word it/explain it in a way that is the least humiliating?

(I edited the first two paragraphs back in bc I fucked in copy pasting this from another sub I posted it in. Oops)