Giving the '87 series another watch, just the various little corny and wtf stuff here and there make me laugh...
Early in the first episode when April is being chased by thugs she's running through the sewers and stops to talk to herself, loudly. Takes off again and runs smack into a brick wall.
Season 2 ep 5 - currently watching
Shredder transforms Leo's swords.
Leo: "Ice cream cones? Ew, yuck!" and throws them down.
Someone doesn't like ice cream...
Shredder on a flying carpet.
Splinter breaks the Turtles out of a bubble with his walking stick, though Leo has had his swords back for a while and Raph's got his sais.
Season 2 ep 8 - Shredder using a "holographic projector" to look like he's wearing normal clothing instead of just putting some on.