Most of the tweets of his I've seen have been perfectly normal. (Despite the fact I enjoy posting random weird ones here like the underwear thing.) He mostly replies to people. Whenever I look, I skip over those because they're too out-of-context. Must be Google Translate (which is awful with Japanese unless it's unrealistically simple/basic and perfect grammatically).
Some ordinary ones are just interesting for the glimpse into what interests him
(a lot of hardcore otaku stuff, that's what). Like just 16h ago he posted "I want one of
these!" and then immediately after, "Red would be niiiice." Perfectly ordinary stuff really, but it reminds me of a more upscale version snuggie blanket. :'D