Remember seeing this low budget slasher flick but I can’t not remember the name of it! All I remember is one specific scene I’d appreciate the help to find this movie

How it goes

This woman is in the bathroom about to shower so she’s in black  braand underwear and she takes everything off she’s about to step in but the door opens and the slasher goes in and the women sees him as she’s in shock then she screams and trys to go in the shower but the slasher grabs her and gets I believe it was either baking soda or chloride and shoves it in her throat as he claimed his victim

All I remember is this could’been made around 2010-2015 I could have sworn the slasher had yellow

This probably had to been a horror comedy anything can help to find it!! Thank you!!