Wowser

Wowser (known in Japan as 'Don-Don Domeru/Domel to Ron') is a Japanese anime based on the Franco-Belgian cartoon comic strip Cubitus, airing from 1988 to 1989 in 52 episodes with two segments per episode. Like its source material, the anime looks into the daily life of a larger white dog named Wowser, along with his owner and eccentric inventor Professor Dinghy and their friends, including Linda and Bob Lovely and Beatrice.

S1E7b: Pillow Talk
While looking for a new pillow for Wowser, the Professor creates a Pillow Suit for him. In that moment, Linda come over to the, and they decide to have her test out the suit. Everything seems normal until the suit suddenly malfunctions and begins to over-inflate, getting Wowser and the Professor squashed between it and the walls as it continues to grow. In desperation, Wowser pulls out a knitting pin and pops the suit, causing it to explode.