Even if it doesn't happen to spill the milk on device, the proper maintenance is needed. (thankyourbaby.com)
No sleep last night equals dad who literally cries over spilled milk in the morning. (policygenius.com)
Or of spilling milk all over yourself, ruining your outfit and leaving you smelling like spoiled milk for the rest of the day (yes, I am speaking from personal experience). (mamapure.com)