How do i tell my mom i need deodorant?

i really need deodorant but how do i tell my mom? almost everyday i go in the bathroom and use my moms deodorant (i know im stupid) well yesterday my mom and me went to shopers drug mart and i said i need to go look at the tooth brushs (i said that becuz the deodorant is next to there) and then i wuz done looking at the tooth brushs i went down to another ile and passed by the deodorant they have mini versions of shampoo, gel, couton swabs, deodorant and other stuff i picked up a mini version of deodorant and said euu (like in a laughting way) and my mom said i know then we left and i said i need to look at the tooth brushs again i just said that becuz i need deodorant and i wuz to scared to tell her the first time and then i said im done looking at the tooth brushs and my mom went the the other derection (not the derection were the deodorant is so i did not get a second chance) please help me i really need some!