my moms friend told us I'm going to pop my baby out like a grease monkey. because im 1cm and 50%…

my moms friend told us I'm going to pop my baby out like a grease monkey. because im 1cm and 50% effaced and I've been that way sometime after March 15th. my Dr was surprised too cause she said I went into labor at some point and I didn't know it. I'm 34 weeks now and found all this out when I was 32 weeks. she said I was already half way there and getting to 50% is hard? I don't think if its true or not she's a older lady and a nurse so I want to believe but I don't know lol.