After purchasing a warranty for his truck, my husband was extremely upset when it broke down and the broken part wasn't covered.  Frustrated, he yelled "Lifetime warranty my a**."  Our son overheard this and asked "Dad what's a lifetime warranty?"  "It means you get screwed" my husband replied still upset.  My son, who was always getting into trouble and was no stranger to time outs said "Well I guess I get lifetime warranties all the time."