 The cast of FOX musical series Glee performed this song on the episode " Blame It on the Alcohol " , with Heather Morris ' character , Brittany Pierce , taking the lead . The episode revolved around teen drinking and its dangers . The members of Glee Club are asked to perform at the school 's alcohol awareness assembly , in which " Tik Tok " is one of the songs performed . Todd VanDerWerff of The A.V. Club wrote that the song 's inclusion in the episode was superfluous , stating that it was just an excuse to get a Kesha song on Glee . VanDerWerff however , wrote that he " REALLY liked Heather Morris ' " rendition of the song . Sandra Gonzalez of Entertainment Weekly praised Brittany 's choreography and overall performance in " Tik Tok " , writing , " The huge star of this number was clearly Brittany , who more and more every week proves that she needs to be moved to the forefront of this show 's big performances and storylines . " Gonzalez gave the cover version of " Tik Tok " a B , calling it " pure , fun entertainment up until we got to the part straight out of the mind of Gordie LaChance . So even though the purple vomit was a bit too much for this weak viewer , the performance made me add a Ke $ ha song to my iTunes , which I never thought would happen . " Erica Futterman of Rolling Stone gave the cover version of " Tik Tok " a mostly positive review , writing , " Love Brittany as we do , we wish Rachel or Mercedes stepped up to the mic . The performance is less risqué than their Pep Rally " Push It " but winds up causing more controversy when Brittany pukes on Rachel and Santana also vomits up grey slush . It 's a fitting end to the song , and the episode . " 
