Someone is 4 months old

Isn't he just the cutest little thing?  The Professor is 4 months old now.  He is such a good baby!  He sleeps great at night, smiles all the time and is now laughing and giggling!  He loves his cloth diapers, soft, fuzzy blankets, being held, playing with his sisters, being in his sisters room and playing with his toys (or my cell phone). 
Happy 4 months Professor!! We love you bunches!