a wrong way to describe giving a handjob... will result in your dick getting slapped right on the head... causing you to cry
guy: 'how bout a handjob?'
girl: 'i dunno, how do you do it?'
guy: *unzips his pants* just take it in your hand and act like its a ketchup bottle
girl: ketchup? *grabs hold of wang*
girl: *wails on his junk*
guy: *cries really loud*
guy: fuck using the ketchup effect!