Song cheech is singing in next movie

While he is ironing all the clothes in the house waiting for donna to show up.He is singing a sing.Sittin in lala waitin for my yaya,uha,yeah baby hurry don't make me worry,uha,may sound funny but I don't believe she's commin,uha.
Does anybody know the name of the song or who sings it??Please.Thanks

The song is an old R&B hit from the 50's.I don't remember the exact title but it's something like WAITIN' FOR MY YA-YA.Something close to the hook line.I think Buckwheat Zydeco also recorded it in the late 80's.

what song is playing while chong is reving up his motorbike inside the house and the band ?

The lyrics of the song that you have mentioned here belong to the song 'Ya Ya' which is originally sung by Lee Dorsey in the year of 1961.