teething , imbibing , and entertainment apparatus and methods utilizing fluids , wherein such fluids may be room temperature , warmed , chilled , frozen , and / or partially - frozen . a fillable body allows a user to imbibe warmed , chilled , frozen , and / or partially - frozen fluids through one or more apertures . a plurality of chewable exterior features , protrusions , and nipples further aid in easing teething pain and / or entertainment . a detachable nipple allows the apparatus to be used with a variety of nipples having differing configurations and sizes . the handles facilitate holding of the apparatus by young users with limited motor skills such as infants and toddlers . the methods allow a child to chew on frozen liquids to at least partially thaw such liquids such that the chilled liquid and / or slush may be directed to the user &# 39 ; s gums , teeth , mouth , and / or throat via aperture . similarly , methods of directing a heated liquid to a child &# 39 ; s gums , teeth , mouth , and / or throat are also disclosed .