Is it just me, or did Body Language have some really strange words to be a Charades game? I've watched a handful of times and frequently asked myself "How in the world do you act that word out?"
The Party Game, which aired in Canada during the 70s, also had some words and phrases that would seem impossible to act out, yet the participants (especially the "home team") usually managed it. To act out phrases, they of course used little charades conventions like forming "A" and "T" (for "the") with their fingers.
They would also indicate soundalike clues by pointing to their ear, or would use snipping or stretching actions to get the guesser to cut back or add some letters or syllables. One of several clips posted on YT:
Don't know whether these techniques would be permitted on Body Language, though. The letter forming surely wouldn't.