The wordings are totally vague but the gist of the lyrics is pretty simple. "We fucked all night and the tomato juice was delicious at the morning" "愛をつまむ" means "pick love" in a word-for-word translation. Ofc it's not a common expression and it just means "make love". "グーイト" is another spelling of "ぐいっと". You know the phrasal expression "ぐいっと飲み干す"