 At some performances , a panel or " jury " from the audience was invited on stage to verify that no trick mechanism was being employed — that he was actually swallowing the items in question and delivering them back through acts of regurgitation . Sometimes Ali would <unk> into the audience during his nut swallowing trick . His stomach exposed by his standard costume , he invited audience members to pat his stomach , allowing them to hear the nuts <unk> within . One newspaper reported that Ali 's feats , essentially controlled vomiting , were performed in " a manner without the least bit of <unk> or anything bordering on <unk> . " Not everyone felt the same : at least one of Ali 's engagements was cut short once the proprietor realized that the nature of the act " was killing their supper shows " . <unk> <unk> and magician Harry <unk> remarked in his 1920 work Miracle <unk> and Their Methods that water spouting was a " performance that could not fail to disgust a modern audience . " 
