I would call this a Suggestive Merger:
"And though the prices were high
folks were ready to buy
her beautiful, beautiful eggs"

I would call this a Distraction Rhyme:
"a bee came along and stung him on the
cocktail, ginger ale.."

I would call this a Dangloid:
"we opened up our squirrel guns
and really gave them...well, we fired our guns.."