From Wikipedia:

Tsundoku (Japanese: 積ん読) is acquiring reading materials but letting them pile up in one’s home without reading them. The term originated in the Meiji era (1868–1912) as Japanese slang. It combines elements of tsunde-oku (積んでおく, to pile things up ready for later and leave) and dokusho (読書, reading books).

AKA me at every comic show.