Affiliate Marketing Secrets

So… these are all words/verbs some slang …from Family Guy episodes 8D!
Could you try to help defining them D:?
on the skids: (no idea D;!): ”Will they let him have kids? Is his life on the skids?”
watered-down: (no longer there…): ”This man seems bent on diluting the already watered-down significance… of the elevated hand slap.”
niche: ”- Oh, there’s Jasper’s plane. – Where? Third one in line. Oh, it’s one of those new “niche” airlines.”
romp: ”Oh, what’s next? A workout followed by a romp around a crowded room while the music goes…”
rite: ”There’s just one little rite of initiation.”
to zone/zoning: ”I have to say I’m a little concerned about the zoning for…”
prose: ”Hi. Would you be offended if I told you your prose suggests a male-working class version of Emily Bronte?”
Thanks in advance!