Lyric discussion by ProfessorKnowItAll 

Cover art for She Is Loaded lyrics by Giles, Giles And Fripp

This song is about a girlfriend/wife who has suddenly hit it rich in, well, a football pool (i.e., soccer to Americans, as this was a distinctly British band); "that decimal stuff" is probably money, although this was recorded in 1967 and England didn't decimalize their currency until 1971and decided to treat the singer like crap, while he suffers her because "she is loaded" (and he hopes to litigate some of that money from her--"I'll sue her, try to make this stick...").

That, or the singer treated her like crap ("she used to give me anything I wanted"--he treated her like a slave, perhaps?) and when she hit the jackpot, she turned the tables on him.

Or, the woman won the money, and the singer is hoping to become her lover so that he can lay claim to a share of it.

For American listeners, "lino" (read: lie-no) is short for linoleum, i.e. that cheap imitation tile you put down in the kitchen.