its beginning to look alot like

raspberry

pengy is,

(a) bathing (b) tasting
or (c) blowing you a raspberry.

mom chose C.

webs definition of blowing a raspberry:
...' blowing a raspberry is to make a noise signifying silliness, made by sticking out the tongue between the lips and blowing to make a sound. in the terminology of phonetics, this sound can be described as an unvoiced linguolabial. it is never used in human language phonemically (i.e., to be used as a building block of words), but it is widely used across human cultures' .
SO IN OTHER WORDS(at an attempt to spell the noise)

we give you, **bbbbbbbth** .