To wreak havoc on a toilet (preferably someone elseâs) by taking a monster shit, often of the explosive diarrhea variety, with extreme force. Past tense: Blew up the Can.
Jay: âEvery time I go over to Ethanâs house, I blow up the can after dinner. I donât think his parents are ever gonna let me come back again.â
Larry: âSusan let me stay over last night and this morning I totally blew up the can. Now she wonât return my calls.â