To take a Trump is another version of "to take a dump", but with separated hard lumps of poop which is due to being very constipated (categorized as type 1 on the Bristol Stool Chart)
slang for that sometimes flabby part of the body where the under-ass rubs up against the back of the leg.
We were making outbehind the shed at the mini-golf place and I was grabbin' her butt, but I had to quit because this chick had mad trump-sweat, it was gross.