bowl over in WordNet English dictionary

1. overcome with amazement
   "This boggles the mind!"
   flabbergast  boggle  bowl over 
   
2. cause to overturn from an upright or normal position
   "The cat knocked over the flower vase"; "the clumsy customer turned over the vase"; "he tumped over his beer"
   overturn  tip over  turn over  upset  knock over  bowl over  tump over 
   

bowl over in English Wiktionary