It’s like the slang amongst the youngster here. So it’s grammatical wrong Japanese phrase. ^^
IT simply stands for Ice cream(read : Aisukurimu) Taberu
(Taberu means eat).
More or less, it has the meaning of : How about eating ice cream?
Recently not only choco and bread that I fond of, I also love to have aisukurimu, haha..
The most often one is Baskin Robbins, I love Rocky Road so much! (well, as if possible, I always choose choco flavour in most of the snacks : choco cake rather than cheese cake, choco cookies/bread rather than salty snacks, etc..)
This is the other temptation of yummy aisukurimu that I had after practising the dance. 😉