Lyric Medeiros

"Big Brother 28" housemate Lyric Medeiros has no shame after admitting she urinates in the shower. Lyric's unsanitary confession to fellow housemate Mallory Aurichio was caught on the show's live feeds Wednesday ... and it's not like it was a one-time thing -- she said she's peed every single time…

One 'Big Brother' housemate's hygiene may leave a bad taste in her housemates' mouths ... because she sipped directly out of a mouthwash bottle the whole house is sharing ... and it was caught on the live feeds. Lyric Medeiros -- one of the 'BB28' housemates -- was at a sink when she grabbed a…