I Messed Up

Sometimes I get muddled A little confused and mixed up I come out with funny things and make everyone crack up My workmate spent thousands on IVF I was explaining this one day but my brain seemed to go absent and I messed it up my own way I told my friends about her My brain was running free I meant to say IVF but said HIV! A slight difference I know but a couple of letters the same I know I messed it up but I made everyone laugh again.