80's bikini movie where a girl takes her top off during a bikini contest

[riotgrrl]

saw a short bit of this on HBO in the 80's. cant recall title, but the scene had a bikini contest where the host checked the girl out and said she had nothing to offer. She then squeaks out -:it's cause i'm wearing this!" tears off anf tosses her bikini top. it hits the face of an nerdy older man looking for houses with his wife, he starts rambling "We;ll take it! We'll take it". It was so funny and so bad that i must see it.