Credit: Astrid Stawiarz/Getty Images/ Catelynn Lowell on Instagram

Remember back in the days of yore when Farrah Abraham poured a bunch of plaster in her lady parts to make some casual molds of her backdoor? Good times!

Farrah's line of pleasure products from Topco Sales is finally on the market (grip-on stroker, anyone?), and you better believe her former co-stars have strong opinions.

The ladies of Teen Mom already made it pretty clear that they're unimpressed by Farrah's foray into sex stardom (she was reportedly kicked off Teen Mom's reboot!), and now Catelynn Lowell has taken to Twitter to slam Farrah's backdoor.

"This is gross bet her parents r proud," Catelynn tweeted along with a photo of Farrah's toys at the Anme Convention in Burbank, California.

While Cate's comments might seem harsh, let's not forget about the fact that she and Farrah have long-standing beef. Farrah didn't withhold her judgement about Catelynn's rumored pregnancy, so it's hardly a surprise that Cate would take every opportunity to throw shade at her backdoor!

Do you think it's time for these ladies to bury the hatchet and be more supportive of each other? Let us know in the comments!